N423AS

Part: WIRE HARNESS — FAULTY (#1 ENGINE) · airframe 38,455 hrs · 12,157 cycles

PIECE OF ELECTRICAL CONNECTOR FELL OUT OF #1 ENGINE WHILE OPENING REVERSER. ALT. DEACTIVATION PROCEDURES USED PER CHP 5, TABLE 3, ITEM 7. GROUNDED - YES. FOUND CONNECTOR DP1102 DAMAGE & DISCONNECTED FROM ENG #1 BEED AIR REGULATOR. ENG HARNESS MW0311 REQUIRES REPLACEMENT. REPLACED MW0311 HARNESS WITH SERVICEABLE. C/W GROUND WING TAI SOLENOID VALVE TEST, OPS CHECKS OK. REVERSED ALTERNATE DEACTIVATION PROCEDURES. REF AMM 73-21-06, 30-11-12, & ASA MAINT CHAPT 005-07-01, TABLE 3, ITEM 7. 9 MIG 51A TAGS INSDTALLED / REMOVED. J.A. 23714. 11/02/2023. ACCOMPLISHED BLEED AIR REHULATOR OPS TEST REF. AMM 73-21-069 AMM SYSTEM OPERATIONAL TEST REF. AMM 77-31-00. ALL CKS GOOD.

Part: SENSOR — FAULTY (APU OIL TEMP) · airframe 37,766 hrs · 11,969 cycles

APU FAULT LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED APU OIL TEMP. SENSOR REF. AMM 49-94-21. OPS CHECK GOOD. LEAK CHECK GOOD. RAN APU BITE, NO FAULT FOUND. OIL TEMP REMAIN 88' C UNDER LOAD. THIS CLEAR MEL 49-1B. SEAMC SCOTT NOTIFIED.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 37,632 hrs · 11,929 cycles

WE HAD DIFFICULTY KEEPING THE MID-CABIN COOL. FLIGHT DECK COLD. AFT CABIN VERY COLD. THE MIOD CABIN QUITE WARM. ALL TEMP CONTROLLERS IN AN UNUSUALLY COLD POSITION. GROUNDED - YES. PERFORMED BITE OF PACK ZONE TEMP CONTROLLER #1 + #2, NO FAULTS FOUND, REF AMM 21-61-00-700-806-002. REF FIM 21-61 TASK 858 FOUND AMBIENT TEMPS ACCURATE FWD, MID, AFT CABIN AND AIR COOLING OPS NORMAL. DURING INITIAL EVALUATION, FOUND TEMP INDICATIONS CORRECT ON CABIN TEMP OVERHEAD PANEL, ALL OPS NORMAL. OK FOR CONTINUED SERVICE.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 37,318 hrs · 11,817 cycles

ENG #1 LEAKING FUEL. GROUNDED - YES. ON DEFERRAL.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 36,984 hrs · 11,712 cycles

APU GENERATOR FELL OFFLINE JUST PRIOR TO PUSHBACK. FAULT LIGHT ILLUMINATED. GROUNDED - YES. ON DEFERRAL.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 36,461 hrs · 11,569 cycles

ON CLIMBOUT, A/P B AND A/P A WOULD NOT ENGAGE. RECYCLED F/D AND BOTH AUTOPILOTS OPERATE NORMALLY DURING CLIMB & CRUISE. GROUNDED - YES. ACCOMPLISHED B737-900 FIM TASK 22-11 TASK 856. INCLUDING BITE TEST PER B737-900 AMM TASK 22-11-00-740-806. BOTH AUTO TEST AND INTERACTIVE TEST PASSED. OK FOR SERVICE.

Part: VALVE — FAULTY (LEFT ECS BAY) · airframe 36,135 hrs · 11,472 cycles

CONT CAB ZONE TEMP LT ILLUM ON RECALL. GROUNDED - YES. R/R FLIGHT DECK TRIM MODULATING VALVE IAW B737-900 AMM 21-61-21.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 36,125 hrs · 11,468 cycles

CONT CABIN ZONE TEMP LIGHT ILLUMINATES ON RECALL CLEARS WITH M/C RESET. GROUNDED - YES. BITE SHOWS FLT DECK TRIM VALVE FAULT. WAS ABLE TO RESET FAULT. CONT CAB TEMP CONTROL OPS CHECK GOOD I/A/W B737-900 FIM 21-62 TASK 833.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 36,116 hrs · 11,465 cycles

BOTH FMC'S FAILED MOMENTARILY THEN RECOVERED (CONCURRENT WITH HITTING SEND ON A CPDLC MSG) CPDLC DATA LINK FAILED AND RECOVERED AT THE SAME TIME. GROUNDED - YES. BOTH FMC'S AND CPDLC OPS CHECK GOOD.

Part: PROBE — OUT OF RANGE (#1 ENG OIL TEMP) · airframe 35,390 hrs · 11,243 cycles

THE ENGINE OIL TEMPERATURE SIGNAL (TEO) IS OUT OF RANGE (MESSAGE # 79-11101), LONG TIME FAULT, #1 ENGINE. GROUNDED - YES. REMOVED & REPLACED OIL TEMPERATURE SENSOR REF B737-900 AMM 79-34-02.

Part: MODULATING VALVE — FAILED (RT A/C PACK) · airframe 35,233 hrs · 11,195 cycles

CONT CAB ZONE TEMP LIGHT ON WITH MASTER CAUTION. GROUNDED - YES. R/H PACK/ZONE TEMP CONTROLLER SHOWS HARD FAIL FLIGHT DECK TCV (V143) FAULT. REMOVED & REPLACED TCV REF B737-900 AMM 21-61-21. ORIG SUB DATE: 1/10/2023

Part: COMPENSATOR — OUT OF LIMITS (LEFT WING TANK) · airframe 34,924 hrs · 11,089 cycles

LEFT FUEL QTY INDICATION BLANK FOR 10 SECONDS DURING PREFLIGHT. GROUNDED - YES. REPLACED TANK UNIT 2 PER B737-900 AMM 28-41-21/401. REPLACED THE COMPENSATOR PROBE AND TANK UNIT #1 PER AMM 28-41-21/401.

Part: WARNING MESSAGE — FALSE ACTIVATION (COCKPIT TEMP) · airframe 35,052 hrs · 11,131 cycles

CONT CABIN ZONE TEMP LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 21-53 TASK 821, OPS NML. ACCOMPLISHED PACK/ZONE TEMP CONT BITE TEST, OPS NML , GREEN , REF FIM 21-62 TASK 801. GROUND VERIFICATION SUCCESSFUL. ORIG SUB DATE: 12/23/2022

Part: FILTER — WARNING MESSAGE (COCKPIT TEMP) · airframe 34,917 hrs · 11,087 cycles

CONT CAB ZONE LIGHT ON RECALL. EXTINGUISHES ON RESET. GROUNDED - YES. RELEASED PER ASA MEL 21-21G FLIGHT DECK PRIMARY TEMP CONTROL INOP. BITE TEST OF R PZTC FAULTED FLT DECK/TRIM VALVE ON BIT & PREV FLT. VERIFY PASSES. RESET PZTC. REMOVED & REPLACED CABIN TEMP SENSOR ASSY FILTER IN FLIGHT DECK IAW B737-900 AMM 21-06-06. OPS TEST OF CABIN TEMP CONTROL & INDICATION GOOD. ACCOMPLISHED R PZTC BITE & ALL TESTS PASS. NO ZONE LIGHT ON RECALL. MEL 21-21G CLEARED.

Part: NONE — NONE (FUEL INDICATOR) · airframe 34,888 hrs · 11,078 cycles

DURING PRE-FLIGHT, LEFT FUEL INDICATOR WAS BLANK FOR 10 SECS AND CAME BACK ON INDICATING 400-500 LBS LESS. GROUNDED - YES. REF B737-900 FIM 28-41 TASK 813 AND TASK 814 NO DEFECTS DETECTED AT THIS TIME.

Part: A/C PACK — WARNING LIGHT (UNKNOWN) · airframe 34,741 hrs · 11,041 cycles

LEFT PACK LIGHT ILLUMINATED. RAN QRH, RESETS WITH MASTER CAUTION RESET. GROUNDED - YES. BITE OF LEFT PACK TEMP CONTROLLER SHOWS TCV FAULT LAST LEG. BITE OF CONTROLLER OPS NORMAL AND FAULT CLEARS REF B737-900 AMM 21-61-20-400-801.

Part: ACTUATOR — FAILED (RT A/C PACK) · airframe 34,567 hrs · 10,990 cycles

RIGHT PACK LIGHT COMES ON WITH MASTER CAUTION & EXTINGUISHED WHEN MASTER CUASTION RESET. GROUNDED - YES. REMOVED & REPLACED RH RAM AIR ACTUATOR REF B737-900 AMM 21-51-21 OPS CHK GOOD MX PROCEDURES.

Part: SENSOR — FAULTED (FUEL QTY) · airframe 34,501 hrs · 10,971 cycles

RIGHT MAIN TANK FUEL QTY & TOTAL WENT BLANK ONCE AIRBORNE. CAME BACK ONCE WE LANDED. GROUNDED - YES. AIR TURNBACK. REMOVED AND REPLACED FUEL TANK UNITS 7, 8, 3, 10 REF B737-900 AMM 28-41-21/401. #2 FQIS SYSTEM TEST GOOD AT 397.2 PICO FARADS REF AMM 28-41-00-730-801.

Part: ACTUATOR — FAULTY (R RAM AIR INLET) · airframe 34,429 hrs · 10,951 cycles

R PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL. EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED & REPLACED RH RAM AIR ACTUATOR REF B737-900 AMM 21-51-2, OPS CHECK GOOD.

Part: ACTUATOR — FAULTED (UNKNOWN) · airframe 34,405 hrs · 10,943 cycles

RIGHT PACK LIGHT ILLUMINATES ON MASTER RECALL. EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. ACCOMP PZTC BITE CK REF B737-900 FIM 21-62 TASK 801. RECORDED RAM AIR ACT FAULT R/H PACK. ACCOMP FIM 21-62 TASK 836. FAULT CLEARED RE-ACCOMPLISHED PZTC BITE CK 3EA TIMES WITH NO FAULTS FOUND INTERMITTENT FAULT NO HISTORY THIS FAULT 30 DAYS O.K. FOR SVC.

Part: HARNESS — FAILED INSP (#2 ENGINE) · airframe 34,410 hrs · 10,944 cycles

#2 ENG FIRE DETECTION LOOP B WILL NOT TEST PROPERLY. GROUNDED - YES. REPLACED MW0326 HARNESS & INSTALLATION TEST GOOD B737-900 AMM 26-11-02.

Part: BATTERY PACK — FAILED (MAIN PASSENGER C) · airframe 34,367 hrs · 10,932 cycles

EMERGENCY BATTERY PACK M1676 FAILS OPS CHECK. GROUNDED - YES. REMOVED AND REPLACED M1676 BATTERY PACK AND POWER SUPPLY M1676 IAW B737-900 AMM 33-51-06. OPS CHECK GOOD IAW B737NG AMM 33-51-06.

Part: BATTERY PACK — FAILED (MAIN PASSENGER C) · airframe 34,367 hrs · 10,932 cycles

EMERGENCY BATTERY PACK M1670 FAILS OPS CHECK. GROUNDED - YES. REMOVED AND REPLACED M1670 BATTERY PACK AND POWER SUPPLY IAW B737-900 AMM 33-51-06. OPSCHECK GOOD AMM 33-51-06.

Part: BATTERY PACK — FAILED (MAIN PASSENGER C) · airframe 34,367 hrs · 10,932 cycles

EMERGENCY BATTERY PACK M1671 FAILS OPS CHECK. GROUNDED - YES. REMOVED AND REPLACED M1671 BATTERY PACK AND POWER SUPPLY IAW B737-900 AMM 33-51-06. OPS CHECKS GOOD AMM 53-51-06.

Part: BATTERY PACK — FAILED (MAIN PASSENGER C) · airframe 34,367 hrs · 10,932 cycles

EMERGENCY BATTERY PACK M2626 FAILS OPS CHECK. GROUNDED - YES. REMOVED AND REPLACED M2626 BATTERY PACK AND PWR SUPPLY IAW B737-900 AMM 33-51-06.OPS CHECKS GOOD AMM 33-51-06.

Part: BATTERY PACK — FAILED (MAIN PASSENGER C) · airframe 34,367 hrs · 10,932 cycles

EMERGENCY LIGHT BATTERY PACK M2335 FAILS OPS CHECK. GROUNDED - YES. REMOVED AND REPLACED M2335 POWER SUPPLY AND BATTERY PACK IAW B737-900 AMM 33-51-06-960-806. OPS CHECK GOOD AMM 33-51-06.

Part: MAGNETIC PLUG — BROKEN (#1 ENGINE) · airframe 32,988 hrs · 10,529 cycles

FOUND STARTER MAGNETIC PLUG BROKEN ON #1 ENG. GROUNDED - YES. REMOVED AND REPLACED #1 ENG STARTER PLUG PER B737-900 AMM 80-11-01. LEAK CHECK GOOD.

Part: HARNESS — FAULTY (APU) · airframe 32,551 hrs · 10,409 cycles

FOLLOW UP TROUBLESHOOTING FOR REPETITIVE APU AUTO SHUTDOWNS WITH FAULT LIGHT DUE TO OIL TEMP FAULTS. GROUNDED - YES. REMOVED AND REPLACED APU ENGINE WIRE HARNESS REF B737-900 AMM 49-11-01/401. PERFORMED APU OPERATIONAL TEST REF AMM 49-11-00-710-801. OPS CHECK GOOD. PERFORMED APU BITE PROCEDURE REF AMM 49-61-00-700-801, NO CURRENT FAULT MESSAGES FOUND.

Part: OIL COOLER — FAULTY (APU) · airframe 32,395 hrs · 10,359 cycles

DURING WALK AROUND APU SHUTDOWN UNCOMMANDED. GROUNDED - YES. RAN B737-900 FIM TASK 49-60 801 APU BITE. FAULT HAS 49-91005, HIGH OIL TEMP SHUTDOWN STATED. FIM TASK 49-90 #801 GVI OIL COOLER AND MAGNETIC DRAIN PLUG. NO DEFECTS NOTED. REPLACED MAG DRAIN PLUG PACKINGS, LEAK CK OK REF B737-900 AMM 49-91-81. PERFORMED AMM TASK 49-21-00-980-801 & FIM TASK 49-30-803. REMOVED & REPLACED APU OIL COOLER IAW AMM 49-91-41. NO LEAKS NOTED. NO CURRENT APU FAULTS.

Part: VALVE — FAULTY (LEFT ECS BAY) · airframe 32,356 hrs · 10,346 cycles

LEFT PACK LIGHT ILLUMINATED ON RECALL. EXTINGUISHES DURING MASTER CAUTION RESET. GROUNDED - YES. BITE TEST ACCOMPLISHED IAW B737-900 AMM 21-62 TASK 801 FOR BOTH CONTROLLERS. PACK CONTROLLER #2 PASSED, PACK CONTROLLER#1 (LH) SHOWED FAULT CODE THIS PACK-TCV FAULT, WAS ABLE TO BE CLEARED. DUE TO HISTORY AS PER B737-900 FIM 21-62TASK 830 LEFT TEMP CONTROL VALVE REMOVED/REPLACED IAW AMM 21-51-10 SYSTEM OK.

Part: CONTROL VALVE — FAULTY (APU) · airframe 32,278 hrs · 10,320 cycles

APU SHUTDOWN DUE TO HIGH OIL TEMPERATURE. GROUNDED - YES. ACCOMPLISHED APU BITE AND FOUND FAULT 49-91005 FAULT IS PRESENT IN TWO OPEN LEGS. ACCOMPLISHED MAG APU DRAIN PLUG INSPECTION, NO DISCREPANCIES IAW B737-900 AMM 49-91-81, VERIFIED APU OIL IS FULL. ACCOMPLISHED B737-900 FIM 49-90 TASK 801. R&R APU OIL TEMP CNTL VALVE REF AMM TASK 49-91-21-000-801/400-801, OPS CK'D GOOD. ALSO, R&R APU OIL TEMP SENSOR REF AMM 49-94-21-000-801/400-801, OPS CK'D GOOD. APU OK FOR SERVICE.

Part: FILTER — CLOGGED (#2 ENGINE) · airframe 32,123 hrs · 10,272 cycles

NO FUEL FLOW INDICATION. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE FUEL FILTER REF B737-900 AMM 73-11-02 LEAK TESTED NO DEFECTS NOTED. FUEL FLOW INDICATION CHECKED GOOD. PERFORMED IDLE POWER RUN TEST 3A REF AMM 73-31-01.

Part: FILTER ELEMENT — CLOGGED (#2ENGINE) · airframe 32,123 hrs · 10,272 cycles

ON LANDING #2 ENGINE FILTER BYPASS LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED 2 ENGINE FUEL FILTER REF B737-900 AMM 73-11-02 LEAK TESTED NO DEFECTS NOTED. ETOPS SUCCESSFUL GROUND VERIFICATION. CANNON PLUG DP0803 HAD BEEN STRIPPED OUT. REMOVED AND REPLACED J8 HARNESS IAW B737-900 AMM 73-21-06-000-801-F00 AND AMM 73-21-06-400-801-F00. ETOPS GROUND FUNCTIONAL TESTS GOOD IAW AMM EEC TEST AMM 73-21-00-700-804-F00 AND TEST 12 - ACTUATORS TEST AMM 73-21-00-700-804-F00. AIRCRAFT RESTORED TO NORMAL AFTER MAINTENANCE.

Part: UNKNOWN — FAULTY (#2 ENGINE) · airframe 31,505 hrs · 10,092 cycles

ON ROLLOUT RIGHT FUEL BYPASS LIGHT ILLUMINATED. RAN QRH, LIGHT EXTINGUISHED WHEN ENGINE WAS SHUTDOWN. GROUNDED - YES. INSPECTED THE CANNON PLUG, FOUND NO DAMAGE, REMAINS SERVICEABLE. REMOVED AND REPLACED THE FFDPS OF ENG #2 REF B737-900 AMM 73-34-01 OPS CHECK GOOD, NO LEAKS NOTED.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 31,484 hrs · 10,086 cycles

50 MINUTES INTO FLT I NOTICED RT MAIN FUEL QUANTITY DECREASING WITH CENTER PUMPS ON AT 1:13 INTO FLT STARTED LOSING 10 POUNDS A SECOND RAN QRH 12.5 WITH PUMPS OFF THE LOSE SLOWED. FODO HAD US RUN THE IMBAL 12.15 CHECKLIST ALSO. WITH THE CENTER PUMPS OFF LOSS INTO THE RT TANK STOPPED. TURN ALL PUMPS BACK ON REST OF FLIGHT WAS NORMAL. GROUNDED - YES. PERFORMED PROCEDURES PER B737-900 FIM 28-41 TASK 820, NO DEFECTS NOTED, NO SIGN OF FUEL LEAK, CROSSFEED PUMP OPERATES OK. FQIS BITE NORMAL.

Part: NONE — DETACHED (L OVERWING EXIT) · airframe 31,425 hrs · 10,072 cycles

A/C LEFT EMERGENCY EXIT LIGHT COVER MISSING ROW 16. GROUNDED - YES. REPLACED 16F REMARK EXIT LENS AS REQUIRED.

Part: DISPLAY — FAILED (FLIGHT COMPARTME) · airframe 30,904 hrs · 9,926 cycles

CAPTAINS MCDU FAILED IN FLIGHT. GROUNDED - YES. REL PER MEL 34-36L CAPTS MCDU INOP AUTH BY SEAMC SMITH @ 2115Z. REPLACED CA'S MCDU PER 34-61-01. OP CHK GOOD. VERIFIED CORRECT SOFTWARE P/N AND CONFIG PER B737-900 AIPC 34-61-01-03 SHEET 04. 2 EA CBS PULLED AND RESET. ETOPS GROUND SYS CHK GOOD. THIS CLEARS MEL 34-36L. SEAMC MARK NOTIFIED.

Part: KEYBOARD — NONE (FLIGHT COMPARTME) · airframe 30,818 hrs · 9,902 cycles

DELETE KEY ON CA FMC INOP. ALL OTHER KEYS SEEM TIO WORK. INPUTS ON SCRATCHPAD ARE NON-DELETABLE. GROUNDED - YES. REPLACED CAPT FMCS CDU KEYBOARD REF B737-900 AMM 34-61-01/401 ALL TEST PASS DELETE FUNCTION RESTORED.

Part: SPACER — DEBONDED (#2 ENGINE) · airframe 30,530 hrs · 9,811 cycles

ENG #2, SPACER #18 ELASTOMERS IS DISBONDED. GROUNDED - YES. REPLACED THE #18 SPACER OF ENG #2 IAW T/C 78472010.

Part: FMC — FAILED (FIRST OFFICER'S) · airframe 30,462 hrs · 9,785 cycles

ENROUTE F/O'S FMC FAILED ,VTK APPEARED AND LASTED APPROX 30 SECONDS FMC REBOOTED. AFTER LANDING FMC DISAGREE LIGHT ILLUMINATED TWICE. GROUNDED - YES. NO HISTORY, PERFORMED B737-900 FIM 34-61 TASK 836 F/O'S FMC RETURNED TO NORMAL OK FOR SERVICE SEAMC ROWEN CONSULTED.

Part: CONTROL VALVE — INOPERATIVE (APU) · airframe 30,359 hrs · 9,752 cycles

APU HAS ADDITIONAL REPORTS OF AUTO SHUTDOWN AFTER OIL COOLER REPLACEMENT FOR OIL OIL TEMP SD(#PRI 2)ETOPS SIGNIFICANT SYSTEM. GROUNDED - YES. REMOVED AND REPLACED APU TCV, REF B737-900 AMM 49-91-21. OP CHECK GOOD NO LEAKS NOTED. REMOVED AND REPLACED APU LUBE MODULE, REF AMM 49-91-11. OP CHECK GOOD, NO LEAKS NOTED.

Part: OIL COOLER — DAMAGED (APU) · airframe 30,348 hrs · 9,747 cycles

APU FAULT LIGHT GENERATOR DISCONNECT WHILE APU RUNNING AT GATE. GROUNDED - YES. REMOVED DAMAGED OIL COOLER. REPLACED OIL COOLER PER B737-900 AMM 49-41-41. APU RUNS CONTINUOUSLY WITH NO AUTO-SHUTDOWN. APU OPS AND LEAKS CHECK GOOD. NO FURTHER DEFECTS NOTED.

Part: CONTROL VALVE — FAULTED (LEFT ECS BAY) · airframe 30,160 hrs · 9,682 cycles

LEFT PACK LIGHT ON. GROUNDED - YES. R/R LEFT PACK TEMP CONTROL VALVE REF B737-900 AMM 21-51-10, PERFORMED BITE TEST REF 21-61-00, NO FAULTS NOTED. THIS CLEARS MEL 21-32B REMOVED PLACARD C/N 16037423. SEAMC SCOTT NOTIFIED.

Part: CONTROL VALVE — FAILED (RIGHT ECS BAY) · airframe 29,946 hrs · 9,622 cycles

CABIN RUNS WARM IN ALL PHASES OF FLIGHT. IMPOSSIBLE TO COOL DOWN. GROUNDED - YES. REPLACED ALL 3 CABIN TEMP SENSOR FILTERS WITH NEW ONES REF B737-900 AMM 21-61-06-400-801. ACCOMP CABIN TEMP CONT & IND OPS TEST. CONT CABIN TEST PASS, BUT FWD & AFT PASS CABIN UNCONTROLLABLE STAYS HOT REF AMM 21-61-00-700-807-002. REF L/P#60229979/ AND 60229980, R/H PACK TCV VALVE REPLACED AND L/H PACK CONTROLLER REPLACED. REF B737-900 FIM 21-62 TASK 849 REPAIR CONFIRMATION OPS NORMAL, ALL THREE ZONES COLD.

Part: CONTROL VALVE — FAILED (RIGHT ECS BAY) · airframe 29,939 hrs · 9,619 cycles

RT PACK ILLUM IN FLIGHT @ CRUISE, RESET WITH MASTER CAUTION. GROUNDED - YES. REMOVED AND REPLACED R/H PACK TCV VALVE (V00141) REF AMM 21-51-10. OPS CHECK GOOD ALL TEST PASS. THIS CLEARS MEL 21-32B SEAMC MIKE NOTIFIED AND PLACARD REMOVED. GROUND VERIFICATION TEST SUCCESSFUL.

Part: ANTENNA — FAULTED (WX RADAR SYS) · airframe 29,699 hrs · 9,548 cycles

WXR NOT PAINTING CORRECTLY. IN AUTO MODE AT FL 350 TILT IN CAL 2M SHOWED NEARLY 1/2 RED 1/2 YELLOW FROM 55NM OUT TO 200NM. MANUAL MODE 0 TILT SHOWED 1/2 GREEN 1/2 YELLOW WITH NO ACTUAL WEATHER NEAR OUR ALTITUDE. IN AUTO GAIN VAR 1 CLICK UP SHOWED 80% RED 20% YELLOW SAME RANGE. ALSO SHOW RED SPECKLES IN SPOTS SELECTING MAP MPDE SHOWED ALMOST SAME DISPLAYS IF IT MAY BE MAPPING ALL THE TIME. GROUNDED - YES. REMOVED AND REPLACED WXR DRIVE UNIT AND ANTENNA REF B737-900 AMM 34-43-00, OPENED/RESET 1EA C/B P6-1, OPS CKD NML REF AMM 34-43-00 ALL GND TESTS PASSED.

Part: TRANSCEIVER — INOPERATIVE (WX RADAR SYS) · airframe 29,682 hrs · 9,539 cycles

RADAR IS ATTENUATING - SHOWED WEATHER IN LINES 20 DEG L AND 30 DEG R OF NOSE WITH CLEAR CONDITIONS. GROUNDED - YES. REPLACED WXR RT UNIT REF. B737-900 MM 34-43-41-400-801 OPENED & CLOSED 2 C/B'S OPS CK OK REF. MM 34-43-00-6710-802-001 CLEARS MEL 34-15D REMOVED CN. 28042423 SEAMC ETOPS LESTOR AUTH.

Part: FMC — FAILED (LEFT) · airframe 29,259 hrs · 9,412 cycles

LEFT FMC FAILED AFTER LANDING. IT CYCLED ON AND OFF MULTIPLE TIMES. VTK FLAG ON THE LEFT NAV DISPLAY. GROUNDED - YES. C/W FMC SYSTEM BITE PROCEDURE AND FOUND NO HARDWARE/SOFTWARE FAULTS OR FAILURE MESSAGES NOTED. REF B737-900 FIM 34-61 TASK 801 & 807. THIS ACTION CLEARS MEL 34-36J. SEAMC SCOTT NOTIFIED.

Part: LIGHT — DETACHED (CABIN) · airframe 29,073 hrs · 9,345 cycles

EXIT SIGN NEXT TO FORDWARD FLIGHT ATTENDANT JUMPSEAT HAS FALLEN OFF. GROUNDED - YES. REMOVED AND REPLACED FWD EXIT SIGN LIGHT ASSY. NEXT TO L1 DOOR REF. B737-900 AMM 33-51-01.OPS CHECK GOOD.

Part: WARNING MESSAGE — FALSE ACTIVATION (COCKPIT TEMP) · airframe 28,796 hrs · 9,254 cycles

UPON RECALL: CONT CAB: ZONE TEMP LIGHT RAN QRH, NO CHANGE. GROUNDED - YES. BITE OF NR 2 PACK TEMP CONTROLLER SHOW, FLT DECK TRIM VALVE FAULT BITE OF CONTROLLER PASS REF B737-800 AMM 21-61-20-400-801. FAULT CLEARS AND NO NEW FAULTS.

Part: CHARGER — NO TEST (EMERGENCY LIGHTS) · airframe 28,753 hrs · 9,240 cycles

WHILE ACCOMPLISHING T/C 78233008, FOUND (2) EA OVERHEAD AISLE LIGHTS INOP OF THE EMERGENCY SYSTEM AT ROW 25DEF AND 29DEF. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY EXIT LIGHT BATTERY PACK AND CHARGER, M2627, REF B737-900 AMM 33-51-06/401. ALL OPS TEST PASS. ALL EMERGENCY EXIT LIGHTS AT 25DEF AND 29DEF OPS TEST PASS.

Part: SPACER — DEBONDED (NR 1 ENG FAN) · airframe 28,753 hrs · 9,240 cycles

PER T/C 78472010 #1 ENG FAN LUBE SPACERS #2,3,5,13,16,20,21,23 AND 24 EALSTOMERS ARE DISBONDED. GROUNDED - YES. REMOVED AND REPLACED SPACERS #2,3,5,13,16,20,21,23 AND 24 ON ENG #1 REF TASK CARD 78472010.

Part: TRANSCEIVER — FAILED (NR 1 HF SYS) · airframe 28,600 hrs · 9,189 cycles

HF#1 TRANSCEIVER FAILED. HF#1 ACTIVE AND STANDBY INDICATORS SHOW "FAIL". GROUNDED - YES. VERIFIED HF #1 TRANSCEIVER FAILED, REMOVED & REPLACED HF #1 TRANSCEIVER & INSTALLATION TEST GOOD B737-900 AMM 23-11-21/401, PERFORMED HF COMMUNICATION TEST GOOD AMM 23-11-00-730-801.

Part: ECU — FAULTY (AFT CARGO COMPT) · airframe 28,479 hrs · 9,157 cycles

DURING TAXI AFT F/A'S NOTED UNUSUAL NOISES. SE TAXI AFTER BRAKES SET, FA SAID NOISE CONTINUED. SOUNDED LIKE OIL CANNING. GROUNDED - YES. REMOVED & REPLACED APU ECU IAW B737-900 AMM 49-61-00. OPS CHECK GOOD NO FAULTS NOTED. APU OPERATES NORMAL.

Part: CONTROLLER — MALFUNCTIONED (A/C PACK TEMP) · airframe 28,462 hrs · 9,151 cycles

A/C PACK LIGHT ILLUMINATED ON MASTER CAUTION RECALL ON DESCENT INTO SEATTLE. INITIALLY RESET THEN ILLUMINATED RAN QRH WOULD NOT RESET. FOLLOWED PROCEDURE PACK LIGHT STAYED ILLUMINATED FOLLOWING QRH TURNED PACK OFF LIGHT EXTINGUISHED. GROUNDED - YES. REF B737-900 FIM 21-53 TASK 821, B737-900 AMM 21-61-20-400-801. COULD NOT DUPLICATE. AS A PRECAUTION DUE TO HISTORY, REMOVED AND REPLACED NR 1 PACK/ZONE TEMP CONTROLLER. OPS TESTS NORMAL.

Part: WARNING LIGHT — FALSE ACTIVATION (LT A/C PACK) · airframe 28,423 hrs · 9,136 cycles

ON RECALL GOT LEFT PACK LIGHT AND CONT ZONE TEMP. BOTH RESET WITH PUSH TO RESET. GROUNDED - YES. ON DEFERRAL.

Part: MODULATING VALVE — FAILED (LT A/C PACK) · airframe 28,421 hrs · 9,135 cycles

LEFT PACK LIGHT ILLUMINATES ON RECALL, RESET UPON MASTER CAUTION RECALL. GROUNDED - YES. REPLACED TCV IAW B737-900 AMM 25-51-10. NO FAULTS/LEAKS NOTED.

Part: SPACER — LOOSE (#2 ENGINE FAN) · airframe 27,778 hrs · 8,928 cycles

NR 2 ENGINE TREND DATA SHOWS AN INCREASE IN LOW PRESSURE ROTOR VIBRATION LEVELS. DATA SCATTER INDICATES FAN LUBE REQUIRED. GROUNDED-YES. ACCOMPLISHED FAN LUBE T/C 78472010 ON NR 2 ENGINE. REMOVED AND REPLACED 2 FAN BLADE SPACERS NR 21, 23. DUE TO ELASTOMER LOOSE. NO OTHER DEFECTS NOTED.

Part: CONNECTOR — ARCED (LT BST PMP MOTOR) · airframe 27,666 hrs · 8,883 cycles

NR 1 AFT FUEL PUMP LIGHT ILLUMINATED DURING PREFLIGHT. 30K FUEL ON BOARD. GROUNDED-YES. PERFORMED B737-900 FIM 28-22 TASK 803, GVI OF CONNECTOR D70, PINS AND PUMP CONNECTOR APPEARED OK. PERFORMED PUMP INSULATION RESISTANCE TEST, REF B737-900 AMM 28-22-00, GOOD. W/ C/B CLOSED AND COLLAR REMOVED, 115VAC AT ALL 3 PINS. INSTALLED D70 AND PUMP OPERATIONS NORMAL UNTIL SHAKEDOWN MOVEMENT OF WIRES AT THE CONN D79 WHILE PUMP ON CAUSED A SPARK TO EXIT THE BACK OF THE CONNECTOR. PUMP STOPPED AND GFI TRIPPED. REMOVED AND REPLACED NR 1 AFT FUEL PUMP PLUG D70, REF B737-900 WDM 28-23-11 AND SWPM 20-61. PERFORMED OPERATIONS TEST OF GFI R18, IAW AMM 28-22-41-720-802. CHECKS GOOD. PERFORMED BONDING CHECK OF NEW PUMP, REF 28-22-41-400-801. REPLACED NR 1 AFT BOOST PUMP, REF AMM 25-22-41. GROUND VERIFICATION GOOD.

Part: PROBE — FAULTY (NR 1 ENGINE) · airframe 27,662 hrs · 8,881 cycles

ACARS MESSAGE: NR 2 EGT 50 DEGREES HOTTER THAN NR 1 EGT. DETERMINED THAT NR 1 ENGINE, "B" CHANNEL, EGT PROBE S4 IS CAUSING INDICATION DISPARITY. READS 109.22 DEGREES C STATIC. GROUNDED-YES. ACCOMPLISHED T495 ENGINES BITE TEST INPUT MONITORING: ENGINE NR 1 READS S1- 88.83 S2- 46.23 S3- 53-20 S4- 109.68; ENGINE NR 2 READS S1- 99.35 S2- 50.81 S3- 52.11 S4- 98.42. REPLACED ENGINE NR 1 "S4" PROBE, REF B737-900 AMM 77-21-01-400-801-F00. OPERATIONS NORMAL, REF AMM 73-21-00-700-804-F00. ENGINE NR 1 NEW INPUT READINGS READ: S1- 30.01 S2- 16.80 S3- 17.66 S4- 39.80.

Part: BLEED VALVE — INOPERATIVE (NR 1 ENGINE) · airframe 27,508 hrs · 8,825 cycles

NR 1 ENG PRSOV GOES TO FULL OPEN WHEN APU AIR IS APPLIED. GROUNDED - YES. REMOVED AND REPLACED THE NR 1 ENG PRSOV, REF B737-900 AMM 36-11-04. OPS CK AND LEAK CK GOOD. ETOPS GROUND VERIFICATION WAS SUCCESSFUL, SEAMC DAVE NOTIFIED.

Part: BATTERY PACK — DISCHARGED (CABIN) · airframe 27,508 hrs · 8,825 cycles

R1 & L2 DOOR EMERGENCY LIGHTS (INSIDE & OUTSIDE) INOP. GROUNDED - YES. REMOVED & REPLACED L2 DOOR EMERGENCY LIGHTS BATTERY PACK. OPS NORMAL REF AMM 33-51-06-960-805. REMOVED & REPLACED R1 DOOR EMERGENCY LIGHTS BATTERY PACK. OPS NORMAL REF AMM 33-51-06-960-805.

Part: ANTI-ICE VALVE — GOUGED (NR 2 ENGINE) · airframe 27,467 hrs · 8,812 cycles

REF T/C 78472000 #2 ENG INLET AND FAN BLADES DETAILED INSP. FOUND TAI VALVE FWD DUCT R/H MOUNT AFT LOBE GOUGED FROM ROD ENDOF TURNBUCKLE. (M) ALF. GROUNDED - YES. REPLACED #2 ENG TAI VALVE REF B737-900 AMM 30-21-11.

Part: TURNBUCKLE — WORN (NR 2 ENGINE) · airframe 27,467 hrs · 8,812 cycles

REF T/C 78472000 #2 ENG INLET AND FAN BLADE- DETAILED INSP. FOUND BOTH TAI VALVE FWD MOUNT TURNBUCKLES UPPER ROD ENDS BEARINGS WORN OUT. (M) ON FWD TAI VALVE DUCT. GROUNDED - YES. REPLACED #2 ENG TAI VALVE TURNBUCKLES REF B737-900 AMM 30-21-11.

Part: WARNING MESSAGE — FALSE ACTIVATION (COCKPIT TEMP) · airframe 27,010 hrs · 8,702 cycles

CONT CAB ZONE TEMP CAUTION LIGHT ILLUMINATES WITH MASTER CAUTION RECALL EXTINGUISHES WHEN RESET. GROUNDED - YES. PERFORMED BITE CHECK ON BOTH TEMP CONTROLLERS REF B737-900 FIM 21-62 TASK 801 NO FAULTS FOUND. GROUND VERIFICATION CHECKS NORMAL.

Part: RADAR — FALSE INDICATION (WEATHER) · airframe 26,828 hrs · 8,656 cycles

RADAR IN AUTO SHOWING PHANTOM RETURNS AT 80NM RANGE. NO WEATHER IN THE AREA. GROUNDED - YES. WXR SYS OPS TESTED NORMAL IAW AMM 34-43-00-710-802-001, CDS BITE NORMAL WITHOUT FAULTS MESSAGE IAW IAW FIM 31-62 TASK 801. UNABLE TO DUPLICATE DEFECT.

Part: HF COMM — MALFUNCTIONED (NR 2) · airframe 26,751 hrs · 8,634 cycles

HF2 FAIL IN ACTIVE & STANDBY WINDOWS. GROUNDED - YES. ACCOMPLISHED RTP B737-900 FIM 23-12 TASK 815, AND HF COMM BITE REF FIM 23-11 TASK 801 NO FAULTS LOGGED ON NR 1 OR 2 HF TRANSCEIVERS, COMM CHECK WITH SFO BY CREW OPS NORMAL. ALL GROUND TESTS PASSED.

Part: TOILET — LEAKING (AFT LAVATORY) · airframe 26,751 hrs · 8,634 cycles

F/A REPORTS SULFUR SMELL MID CABIN SMELL FIRST ENCOUNTERED AT LEVEL OFF OF CRUISE . SMELL DISSIPATED THEN RETURNED APPROX 30 MIN LATER CABIN AIR QUALITY EVENT LEVEL 1. GROUNDED - YES. PERFORMED B737-900 FIM 05-51 TASK 814 STEP 5A & B FOUND EVIDENCE OF WASTE TANK LEAKAGE ON INSULATION BLANKET ON SIDEWALL NEXT TO THE WASTE TANK . ALSO EVIDENCE OF LEAKAGE ON SURROUNDING WIRE HARNESSES. FOUND DISCOLORATION ON APU BLEED DUCT INSULATION. CLEANED BLANKET OF WATER SPOTS NOT SEWAGE. FOUND AFT LAV FLOOR WET AROUND BOWL CHANGED TOILET & CLEANED AREA CLEANED DISCOLORATION ON APU DUCT WIPED WET WIRES OFF REF B737-900 AMM 38-32-01-000 FWD AFT TOILET SMELLS BETTER RAN APU FOR 30 MIN WITH PACKS ON HIGH NO SMELLS NOTICED IN PITS OR CABIN AFTER WORK PERFORMED.

Part: WARNING LIGHT — ILLUMINATED (RT A/C PACK) · airframe 26,494 hrs · 8,558 cycles

RIGHT PACK LIGHT DURING CLIMBOUT. RESET TRIP BUT LIGHT CAME BACK. TURNED OFF PACK FOLLOWING CHECKLIST. GROUNDED - YES. ACCOMPLISHED FIM 21-53 TASK 802, FAULT ISOLATION. RAN RT PACK FULL HOT & FULL COLD FOR 3 HOURS, UNABLE TO CAUSE PACK TO TRIP. REMOVED & REPLACED THE RT COMPRESSOR DISCHARGE OVERHEAT SWITCH (390 F), (S935) RT PACK DISCHARGE DUCT OVERHEAT SWITCH, & (S939) RT TURBINE INLET OVERHEAT SWITCH AS A PRECAUTION IAW AMM 21-51-40, AMM 21-51-41 & AMM 21-51-42, OPS CHECKED NORMAL. ACCOMPLISHED A PACK/ZONE TEMP CONTROLLER NR 1 & 2 BITE TEST IAW AMM 21-61-00-700-806-002, OPS CHECKED NORMAL.

Part: START VALVE — FAILED (NR 2) · airframe 26,082 hrs · 8,438 cycles

AFTER PUSHBACK, WE STARTED ENGINE #2, NORMAL START INCLUDING START SWITCH MOVING TO OFF AT 56%, BUT THEN START VALVE OPEN LIGHT REMAINED ILLUMINATED AND FLASHED. WE PERFORMED QRH PROCEDURE, SHUTDOWN ENGINE, STARTED #1 AND TAXIIED TO GATE. START VALVE OPEN LIGHT FOR ENGINE #2 REMAINED ILLUMINATED. GROUNDED - YES. PERFORMED EEC BITE CHK IAW B737-900 AMM 73-21-00. NO FAULT NOTED. R&R #2 ENG START VALVE PER AMM 80-11-03. OPS CHK FAILED. NO APU PSI RISE AND C/B P6-2 (C4) POPPING. SWAPPED IN ANOTHER START VALVE PER AMM 80-11-03. NO START VALVE OPEN LIGHT. R&R #2 ENG START SWITCH REF AMM 80-11-00. OPS TEST PASSED. PERFORMED POWERPLANT TEST 1 FOR #2 ENG START VALVE. TEST PASSED. OPS CHK GOOD. LEAK CHK GOOD REF AMM 71-00-00 AND AMM 80-11-03. START LIGHT SWITCH OPERATES NORMALLY.

Part: FMC — MALFUNCTIONED (COCKPIT) · airframe 25,552 hrs · 8,297 cycles

FMC DISAGREE ON GROUND IN SAN. GROUNDED - YES. ACCOMPLISHED QRH AND FM PROCEDURES. RESTORED NORMAL.

Part: SCREW — LOOSE (THROTTLE LEVER) · airframe 25,422 hrs · 8,256 cycles

NUMBER 2 THRUST LEVER VIBRATES AND RATTLES INTERMITTENTLY IN CRUISE FLIGHT. GROUNDED - YES. SECURED LOOSE SCREW ON NR 2 ENG THROTTLE LEVER NO HISTORY.

Part: FMC — MALFUNCTIONED (NR 2) · airframe 25,390 hrs · 8,243 cycles

#2 FMC MAP VTK FAILURE. GROUNDED - YES. FOUND FMC #2 UNRESPONSIVE TO BITE AND POWER INDICATION IS EXTINGUISHED. OPENED AND RESET 2EA C/B. REMOVED AND REPLACED #2 FMC REF AMM 34-61-02-000-801/400-801. REMOVED TAGS AND RESET 2EA C/B. OPS CHECKS PASSED.

Part: BLADE — DAMAGED (NR 2 ENGINE) · airframe 25,276 hrs · 8,214 cycles

#2 ENG SN 962761 FAN BLADES 1,2,6,7,10,11,14,17,18,21,23,24, HAS CU-NI DAMAGE REF TC 78472010. GROUNDED - YES. REPLACED ALL 24 BLADES PER T/C 78472010. ACCOMPLISHED VIBE SURVEY REF T/C 78472010.

Part: UNKNOWN — MALFUNCTIONED (COCKPIT) · airframe 25,243 hrs · 8,204 cycles

IN CRUISE AT FL 360 NEAR PIH, CAPTAINS FMC SCREEN WENT BLANK AND DISPLAYED CALL, FAIL, MSG, OFFSET, AND AND EXEC LIGHTS. AFTER APPROX 30 SECONDS, FMC SCREEN DISPLAYED "BIT PASSED" FOR APPROX 2 SECONDS, THEN NORMAL OPS RESUMED. NEITHER ND OR AUTO FLIGHT FUNCTIONS WERE AFFECTED DURING THIS ISSUE. GROUNDED - YES. ACCOMPLISHED FIM 34-61 TASK 804. OPS CHECK NORMAL REF FIM 34-61 TASK 807.

Part: WINDOW — DAMAGED (COCKPIT) · airframe 25,164 hrs · 8,182 cycles

L-1 WINDOW DAMAGED REPLACE L1 WINDOW HEAT CONTROLLER PRECAUTIONARY. GROUNDED - YES. REPLACED L1 WINDOW HEAT CONTROLLER REF MM 30-41-11 OPS NORMAL.

Part: DOUBLER — CRACKED (BS 277.8-235.8) · airframe 25,137 hrs · 8,176 cycles

CRACK ON GROUND POWER DOOR SURROUND DOUBLER LWR LAND AREA. GROUNDED - YES. REPAIRED PER B737-900 SRM 53-10-15-2R-4.

Part: ENGINE — MAKING METAL (LEFT) · airframe 24,813 hrs · 8,080 cycles

DUE TO RESULTS OF METAL PARTICLES FOUND IN AGB/TGB CHIP DETECTOR REF L/P 12035616, #1 ENGINE REQUIRES REPLACEMENT. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE REF SHOP W/O 462860, N/R #00005.

Part: UNKNOWN — MALFUNCTIONED (NR 1 ENGINE) · airframe 24,799 hrs · 8,074 cycles

#1 ENGINE VIB INDICATION BLANKING INT. GROUNDED - YES. PERFORMED AVM SIGNAL CONDITIONER BITE PER FIM 77-31 TASK 801. FOUND NO CURRENT FAULTS. PERFORMED FAULT HISTORY AND FOUND NO FAULTS FOR ENGINE VIBE INDICATION. FOUND FAULT N2 TACHO LOSS E1. PERFORMED FIM 77-31 TASK 805. NO N2 SPEED SENSOR DATA. PERFORMED CDS BITE PER FIM 31-62 TASK 801. NO CURRENT FAULTS. PERFORMED FAULT HISTORY AND FOUND FAULT CODE 31-63150. PERFORMED FIM 31-62 TASK 845 ENGINE 1 N2 RPM INVALID. REMOVED DEU-1, DEU-2 , AND AVM PER AMM 31-62-21 AND AMM 77-31-03. PERFORMED CONTINUITY CHECKS BETWEEN DEU-1 AND DEU-2 TO N2 SPEED XMTR. CONTINUITY CHECKS GOOD. PERFORMED CONTINUITY CHECKS BETWEEN AVM AND N2 SPEED SENSOR PER FIM 77-31 TASK 805. CLEANED CONNECTOR DP1201 ON ENGINE #1. INSTALLED DEU-1, DEU-2, AND AVM PER AMM 31-62-21 AND AMM 77-31-03. PERFORMED OPS TESTS OF BOTH DEU-1 AND DEU-2 PER AMM 31-62-21-400-801. PERFORMED LRU REPLACEMENT TEST PER FIM 22-11 TASK 802. ALL TESTS PASSED. PERFORMED BITE PROCEDURE OF AVM PER FIM 77-31 TASK 801. NO FAULTS. PERFORMED ENGINE RUN PER AMM 71-00-00-800-807 FOR 10 MINUTES. VIBE INDICATION WORKS NORMAL. PERFORMED AVM BITE PROCEDURE PER FIM 77-31 TASK 801.

Part: WIRE HARNESS — BROKEN (NR 2 ENGINE) · airframe 24,466 hrs · 7,981 cycles

FOUND BROKEN FIRE DETECTION HARNESS ON ENG 2. GROUNDED - YES. REMOVED AND REPLACED MW0326 HARNESS IAW AMM 26-11-02. OPS CHECKS GOOD IAW AMM 26-11-00. ETOPS GROUND VERIFICATION GOOD.

Part: WARNING LIGHT — FALSE ACTIVATION (NR 1 ENGINE) · airframe 24,164 hrs · 7,894 cycles

NUMBER 1 ENGINE CONTROL LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED BITE TEST PER B737-900 FIM 73-06 TASK 801. NO FAULTS FOUND. PERFORMED ENGINE RUN EEC BITE CHECK, NO FAULTS WERE FOUND, LIGHT REMAINED OFF. GROUND VERIFICATION WAS GOOD.

Part: ACTUATOR — FAULTED (LEFT RAM AIR) · airframe 24,141 hrs · 7,888 cycles

L PACK ILLUMINATED ON RECALL AFTER START EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED LEFT RAM AIR ACTUATOR IAW B737-900 AMM 21-51-21/401. PZTC 1&2 BITE TESTED GOOD W/O FAULTS. LEFT PACK OPS CHECKED NORMAL ON GND.

Part: WARNING SYSTEM — FALSE ACTIVATION (COCKPIT) · airframe 24,094 hrs · 7,878 cycles

LEFT PACK LIGHT ILLUMINATED ON RECALL. GROUNDED - YES. PERFORMED PACK/ZONE TEMP CONT BITE TEST REF AMM 21-61-00 SYSTEM OP CHECKS GOOD NO DEFECTS NOTED AT THIS TIME.

Part: PROBE — OUT OF TOLERANCE (NR 2 ENGINE) · airframe 24,021 hrs · 7,858 cycles

WHILE PERFORMING T/C 78273000 FOUND MGS NR: 75-20832. THE T3 SIGNAL IS OUT OF RANGE ON #2 ENGINE. LONG TERM FAULT. GROUNDED - YES. INTERROGATED CDU. FAULT CODE STILL ACTIVE. REMOVED AND REPLACED THE #2 ENGINE T3 PROBE IAW AMM 73-21-07/401. GROUND VERIFICATION TEST IS GOOD. NO LEAKS NOTED. THIS CLEARS PLT.

Part: UNKNOWN — MALFUNCTIONED (ELECTRICAL SYS) · airframe 23,282 hrs · 7,647 cycles

ON TAXI OUT APU KICKED OFFLINE AND BOTH ENGINE CONTROL LIGHTS ILLUMINATED. GROUNDED - YES. APU PWR KICKED OFF LINE PRIOR TO ENG ELEC SYS PWR UP. POWERED DOWN ALL SYSTEMS AND REBOOTED SHIPS POWER- ALL FAULTS CLEARED. ACFT CLEAR FOR SERVICE REF AMM 71-00-00.

Part: ACTUATOR — FAILED (RAM AIR INLET) · airframe 23,285 hrs · 7,648 cycles

AT TOD WHEN CHECKING RECALL LEFT PACK LIGHT ILLUMINATED. HOWEVER RESET WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED LEFT RAM AIR DOOR ACTUATOR W/NEW REF AMM 21-51-21-000-801 & AMM 21-51-21-400-801. BONDING CHECK IS GOOD REF AMM 21-51-21. RAM AIR INLET ACTUATOR TEST OK.

Part: WARNING SYSTEM — FALSE ACTIVATION (COCKPIT) · airframe 23,282 hrs · 7,647 cycles

LEFT PACK LIGHT ILLUMINATED DURING MASTER CAUTION RECALL. GROUNDED - YES. PERFORMED OPERATIONAL TEST OF LEFT PACK IAW FIM 21-53 TASK 803. OPS CHECKS GOOD.

Part: WARNING SYSTEM — FALSE ACTIVATION (COCKPIT) · airframe 23,236 hrs · 7,635 cycles

LEFT "PACK" LIGHT ILLUMINATES WHEN MASTER CAUTION RECALL PUSHED. EXTINGUISHES WHEN SYSTEM IS RESET. GROUNDED - YES. REF FIM TASK 21-53 TASK 809, NR 1 PZTC LOGGED RAM AIR ACTUATOR FAULT, RESET FAULT. GVI LEFT RAM AIR DUCT, NO OBSTRUCTIONS NOTED. NR 1 AND NR 2 PZTC BITE TESTED GOOD WITHOUT FAULTS. LEFT PACK OPS CHECKED NORMAL ON GND W/O DEFECTS.

Part: WARNING SYSTEM — FALSE ACTIVATION (COCKPIT) · airframe 23,199 hrs · 7,622 cycles

LEFT PACK ILLUMINATES ON RECALL . QRH COMPLETED LIGHT RESETS. GROUNDED - YES. PERFORMED LEFT PZTC BITE FOUND LEFT RAM AIR ACTUATOR FAULT. CW FIM 21-62 TASK 837 FAULT CLEARED NO HISTORY 30 DAYS LEFT PACK LIGHT NO LONGER ILLUMINATES ON RECALL.

Part: FIRE DETECTOR — DAMAGED (NR 1 ENGINE) · airframe 23,136 hrs · 7,601 cycles

WHILE PERFORMING T/C N8420000 (LT ENGINE GVI), FOUND FIRE DETECTOR MW0325 DAMAGED. GROUNDED - YES. LT ENGINE FIRE DETECTOR MW0325 REMOVED AND REPLACED REF AMM 26-11-01. OPERATIONAL CHECK GOOD.

Part: FILTER — DIRTY (CABIN) · airframe 22,559 hrs · 7,427 cycles

CABIN TEMPERATURE ROWS 6-10 EXCESSIVELY WARM IN FLIGHT. GROUNDED - YES. NO FAULTS ON BOTH PZTC BITE. CLEANED FLT, FWD & AFT COMPARTMENT ZONE TEMP FILTERS REF AMM 21-61-06. RAN PACKS, OPS NORMAL.

Part: UNKNOWN — MALFUNCTIONED (COCKPIT) · airframe 22,537 hrs · 7,421 cycles

AFTER LANDING F/O'S SIDE VTK FLAG ILLUMINATED. IT RECOVERED MOMENTARILY AND THEN CAME BACK ON. GROUNDED - YES. ALIGNED ADIRU'S, NO VTK FLAG PRESENT ON F/O ND. CHECKED INFLIGHT FAULTS AND RT FMC SHOWS PGM FAULT ON GRD AT 05:41Z TIME OF LANDING. PERFORMED FIM 34-61 TASK 807, FMC PROMPT IS STABLE AND SHOWING ON F/O MCDU.

Part: CONTROL PANEL — MALFUNCTIONED (CABIN PRESSURE) · airframe 22,360 hrs · 7,373 cycles

FOLLOW-UP TO HISTORY OF PRESSURIZATION PANEL (P5-6) NOT DIMMING ISSUES. GROUNDED - YES. ENGINEERING REQUEST - REMOVED/REPLACED CABIN PRESSURE CONTROL MODULE REF B737-900 AMM 21-31-02. ALL REQUIRED TESTS PER SAME MM OPS NML. GROUND VERIFICATION TESTS GOOD REF SAME AMM. BOTH CPC'S SHOWED ON POWER UP - SYSTEM OK, NO EXISTING FAULTS AND NO INFLT FAULTS LOGGED.

Part: OUTFLOW VALVE — MALFUNCTIONED (CABIN PRESSURE) · airframe 22,339 hrs · 7,364 cycles

PRESSURIZATION OUTFLOW VALVE INDICATES CLOSED ON GROUND. GROUNDED - YES. CYCLED ELEC PWR - PERFORMED BITE TEST OF BOTH CABIN PRESS CONTROLLERS & MANUAL OPS CK OF OUTFLOW VALVE NML PER B737-900 AMM 21-31-00.

Part: CONTROL PANEL — MALFUNCTIONED (COCKPIT) · airframe 22,269 hrs · 7,346 cycles

CAPT AND FO'S RADIO TUNING PANELS BOTH SHOW ACTIVE/STANDBY FAILURE WHEN HF2 IS SELECTED. GROUNDED - YES. ACCOMPLISHED SUCCESSFUL GROUND VERIFICATION TEST REF FIM 23-11 TASK 801 NR 2 HF COMM BITE TEST PASS W/ NO FAILURES LOGGED, HF NOW OPS NORMAL.

Part: LIGHT — MALFUNCTIONED (PRESS PANEL) · airframe 22,228 hrs · 7,335 cycles

AT TOP OF DESCENT THE PRESSURIZATION PANEL LIGHTING WENT DARK AND THE NUMBERS BECAME EXTREMELY DIM AND HARD TO READ. GROUNDED - YES. PERFORMED B737-900 FIM 21-31 TASK 803. AFTER RESET OF BREAKERS LIGHTING RETURNED TO NORMAL AND NO OTHER DEFECTS NOTED AT THIS TIME. OK FOR SERVICE.

Part: BATTERY — DISCHARGED (MASTER) · airframe 21,895 hrs · 7,232 cycles

FOUND BATTERY SWITCH LEFT ON - BATTERIES ARE DISCHARGED. GROUNDED - YES. RMVD/INSTALLED FWD AND AFT MAIN BATTERIES REF B737-900 AMM 24-31-11. SYS CKS NML.

Part: TRANSITION PANEL — CORRODED (FUSELAGE) · airframe 21,888 hrs · 7,230 cycles

AFT CARGO COMPARTMENT RIGHT SIDE FLOOR TO SIDEWALL TRANSITION PANEL HAS APPROX 24 SPOTS OF CORROSION ON UPPER SURFACE (WHICH INCLUDES PREVIOUSLY BLENDED AREAS) BETWEEN STATION 727I +8. GROUNDED - YES. REMOVED CORROSION FROM UPPER AND LOWER FROM TRANSITION PANEL IAW SRM 53-00-53-1A-2- ORG MAT .040 IAW SRM 53-60-53-01-2. MAT LOSS .030 REMAINING THICKNESS IS .010. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2-. REMOVED DAMAGE SECTION FROM STA 727 1+8 TO STA 767 IAW SRM 51-40-02-. FABRICATED NEW TRANSITION PANEL SECTION FROM STA 727 1+8 TO 767 IAW SRM 53-00-53-R-5- AND DWG 166A73-02-37 REV- SHEET .0037. ALODINED IAW SRM 51-20-02- PRIMED IAW SOPM 20-41-02 AND INSTALLED NEW TRANSITION PANEL FROM STA 727 1+8 TO STA 767 IAW DWG SRM 51-40-02.

Part: TRANSITION PANEL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 21,888 hrs · 7,230 cycles

AFT CARGO COMPARTMENT LEFT SIDE FLOOR TO SIDEWALL TRANSITION PANEL HAS APPROX 33 SPOTS OF CORROSION ON UPPER SURFACE BETWEEN STATIONS 727 AND STATION 727I +8. GROUNDED - YES. REMOVED CORROSION FROM STA 727 TO 727I+8 IAW SRM 53-00-53-1A-Z, REMAINING MATERIAL THICKNESS BETWEEN STA 727E+10 - 727I+8 IS .033 FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2, REMOVED DAMAGED SECTION IAW SRM 53-00-53-2R-5 IAW SRM 53-60-53-01-2. REMOVED DAMAGE SECTION, FABRICATED, LOCATED AND DRILLED AND INSTALLED NEW REPAIRED SPLICE IAW SRM 53-00-53-22-5.

Part: TRANSITION PANEL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 21,888 hrs · 7,230 cycles

FWD PIT, RT TRANSITION PANEL FROM BS 508 TO BS 514 HAS CORR. GROUNDED - YES. REMOVED CORROSION ON RT TRANSITION PANEL FROM STA 508 TO STA 514 IAW SRM 51-10-02 ORIGINAL THICKNESS IS .040 REMAINING THICKNESS IS .034, MATERIAL LOSS .006 FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2. REMOVED AND REPLACED TRANSITION PANEL STA 508 TO STA 514 IAW BAC DWG 143A8126 REV G, BAC DWG 143A8126 REV-, SRM 51-40-05, BAC DWG 143A8126 REV A, SH19 SRM 51-20-01, SOPM 20-41-02, INSTALLED IAW SRM 51-40-02, BAC DWG 143A0080 REV-SH 17.

Part: TRANSITION PANEL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 21,888 hrs · 7,230 cycles

FWD PIT, RT TRANSITION PANEL FROM BS 500A TO BS 500L HAS MULTIPLE SPOTS/AREAS OF CORR. GROUNDED - YES. REMOVED CORROSION ON TRANSITION PANEL IAW SRM 51-10-02. ORIGINAL THICKNESS IS .040 , AT MULTIPLE LOCATIONS REMAINING THICKNESS IS .030, LOSS OF .010 OF MATERIAL. OUT OF LIMITS IAW SRM 53-00-53-1A-2. REMOVED TRANSITION PANEL FROM STA 500A TO STA 500L AND REPLACED WITH REPAIRED/FABRICATED TRANSITION PANEL IAW SRM 53-00-53-2R-5 & BAC DWG 143A7500 REV A.

Part: TRANSITION PANEL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 21,888 hrs · 7,230 cycles

AFT CARGO COMPARTMENT, RIGHT SIDE FLOOR TO SIDEWALL TRANSITION PANEL HAS APPROX 29 SPOTS OF CORROSION ON UPPER SURFACE BETWEEN STATIONS 727 AND STATION 727I +8. GROUNDED - YES. AREA FROM STA 727(+10 TO STA 727) +8 FOUND TO BE OUT OF LIMITS IAW SRM 53-60-53-01-2.0 ORG MAT .040 MAT LOSS .030. REMAINING THICKNESS IS .010. REMOVED DAMAGED SECTION FROM STA 727C TO 10 TO 7271+8 IAW 51-40-02. FABRICATED NEW PANEL FROM STA 737C+10-7271+8 IAW 51-20-01. PRIMED IAW SOPM 20-41-02 AND INSTALLED NEW TRANSITION PANEL FROM STA 727C + 10 TO 7271+01 IAW DWG 146A7500 REV C SHEET 0037 AND SRM 51-40-02.

Part: INTERCOSTAL — CRACKED (FUSELAGE) · airframe 21,888 hrs · 7,230 cycles

MAIN CABIN, FORWARD WET AREA, MACHINED INTERCOSTAL AT BS344-BS360 LBL 11.10, WL 208.1 CRACKED ON UPPER FLANGE. GROUNDED - YES. REMOVED AND REPLACED INTERCOSTAL IAW SRM 51-40-02 AND DRAWING 141A5400 REV- SHEET 94.

Part: INTERCOSTAL — CRACKED (FUSELAGE) · airframe 21,888 hrs · 7,230 cycles

MAIN CABIN, FORWARD WET AREA, MACHINED INTERCOSTAL AT BS344-BS360 BL 0, WL 208.1 CRACKED ON UPPER FLANGE. GROUNDED - YES. REMOVED AND REPLACED INTERCOSTAL IAW SRM 51-40-02 AND DRAWING 141A5400 REV-SHEET 32.

Part: DOOR SILL — CORRODED (FUSELAGE) · corrosion level 2 · airframe 21,888 hrs · 7,230 cycles

FWD PIT DOOR CUTOUT LOWER SILL WEB HAS INTERGRANULAR CORROSION. GROUNDED - YES. REMOVED CORROSION ON THE FWD PIT DOOR CUTOUT LWR SILL WEB IAW SRM 51-10-02. ORIG. THICKNESS IS .045. REMAINING THICKNESS IS .010. REMOVED .035, AND IS OUT OF LIMITS IAW SRM 53-30-15-1A-1. REMOVED AND REPLACED THE SILL WEB PN: 654A0003-58, PO: 928223.1 PER SRM 51-40-02. DWG: 143A8330 REV:B, AND 143A8330 REV:D.

Part: CONTROL MODULE — DEFECTIVE (COCKPIT) · airframe 21,687 hrs · 7,167 cycles

CABIN PRESSURE PANEL LIGHTS PULSE IT IS WORST IN DIM SETTING. GROUNDED - YES. REMOVED AND REPLACED CABIN PRESSURE CONTROL SELECTOR MODULE REF AMM 21-31-02. CABIN PRESSURIZATION OPERATIONAL GROUND TEST AND MANUAL MODE TEST CHECKED NORMAL REF AMM 21-31-00.

Part: ELASTOMER — WORN (NR 1 ENGINE) · airframe 21,618 hrs · 7,143 cycles

DURING ACCOMPLISHMENT OF T/C 78472002 FOUND 23 WORN SPACERS ON NR 1 ENGINE. GROUNDED - YES. REPLACED 23 SPACERS ON NR 1 ENGINE REF T/C 78472002.

Part: SHIM — WORN (NR 1 ENGINE) · airframe 21,618 hrs · 7,143 cycles

WHILE ACCOMPLISHING T/C 78472002 FOUND ALL 24 SHIMS WORN ON NR 1 ENGINE. GROUNDED - YES. REPLACED ALL 24 SHIMS ON NR 1 ENGINE REF T/C 78472002.

Part: BLADE — WORN (NR 1 ENGINE) · airframe 21,618 hrs · 7,143 cycles

DURING ACCOMPLISHING T/C 78472002 FOUND 6 BLADES WITH WORN CU-NI COATING ON NR 1 ENGINE. GROUNDED - YES. REPLACED 6 BLADES ON NR 1 ENGINE REF T/C 78472002.

Part: WARNING SYSTEM — FALSE ACTIVATION (COCKPIT) · airframe 21,577 hrs · 7,131 cycles

UPON RECALL LEFT HAND PACK ILLUMINATED AND CLEARED WITH MASTER CAUTION RESET. GROUNDED - YES. CREW PERFORMED BITE CHECK ON BOTH TEMP CONTROLLERS REF AMM 21-60-01 NO FAULTS LOGGED. SYSTEM OPS CHECKS NORMAL.

Part: FMC — MALFUNCTIONED (COCKPIT) · airframe 21,566 hrs · 7,126 cycles

AFTER LANDING & DURING APU START, YELLOW "FMC P/RST" LIGHT ILLUMINATED. YELLOW "VTK" FLAG APPEARED ON CAPT MAP DISPLAY AND BOTH FMC CDU'S REVERTED TO "MENU" PAGE W/NO "FMC" SELECTION AVAILABLE AT 1L OF MENU PAGE. PROBLEM CLEARED ON ITS OWN MOMENTARILY & REOCCURRED MULTIPLE TIMES TO INCLUDE AFTER BOTH ENGINES SHUTDOWN AT GATE. GROUNDED - YES. RESET BOTH FMC & OPS NML PER FIM 34-61 TASK 836. ETOPS SIGNIFICANT SYSTEM, GROUND VERIFICATION SUCCESSFUL.

Part: FMC — MALFUNCTIONED (COCKPIT) · airframe 21,486 hrs · 7,100 cycles

VTK MSG FOLLOWED BY MAP MSG DISPLAYED ON FO'S NAV DISPLAY. FMC SINGLE OPERATING MSG ON FMC SCRATCHPAD. RIGHT FMC FAILED. GROUNDED - YES. ACCOMPLISHED FIM 34-61 TASK 836. DUAL FMC OPERATION RESTORED. OPS CHECK NORMAL.

Part: SCAVENGE PUMP — CONTAMINATED (NR 1 ENGINE OIL) · airframe 21,210 hrs · 7,008 cycles

AFTER THE NR 1 ENGINE STARTED, NR 1 OIL FILTER BYPASS LIGHT ILLUMINATED FOR APPROX 10 SECONDS, AFTER LIGHT WENT OUT, IT ILLUMINATED 2 MORE TIMES FOR APPROX 5 SECONDS. ALL OTHER ENGINE INDICATIONS NORMAL. POWER AT IDLE DURING ENTIRE TIME WHEN LIGHT ILLUMINATED AND WENT OUT. ACFT GROUNDED. WHILE PERFORMING MAINTENANCE PROCEDURES, FOUND ALUMINUM CONTAMINATION OF THE THE NR 1 ENGINE SCAVENGE OIL FILTER. INSPECTED THE ENG SUPPLY FILTER IAW AMM 79-21-03 AND MCDS IAW AMM 79-00-00-200-804-F00, NO CONTAMINATION NOTED. FOUND NO CDU FAULTS, NO CLOGGED INDICATION SHOWN AND NO OTHER FAULT CODES FOUND. VERIFIED POP OUT INDICATOR NOT EXTENDED. R & R THE NR 1 ENGINE SCAVENGE OIL FILTER IAW AMM 79-21-06, AND OIL SUPPLY FILTER IAW AMM 79-21-03. REPLACED THE NR 1 ENGINE SCAVENGE OIL FILTER CLOGGING TRANSMITTER S125 IAW AMM 79-21-07, NO LEAKS NOTED AND OPS CHECKED GOOD.

Part: HMU — STUCK (NR 2 ENGINE) · airframe 20,359 hrs · 6,739 cycles

DURING PREFLIGHT, THE NR 2 ENGINE VALVE CLOSED LIGHT ILLUMINATED BRIGHT BLUE. ACFT GROUNDED. REMOVED AND REPLACED THE NR 2 HMU, OPS AND LEAK CHECKED GOOD, ENGINE VALVE CLOSED LIGHT OPERATES NORMALLY.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 20,346 hrs · 6,733 cycles

NR 2 ENGINE VALVE CLOSED INDICATOR ILLUMINATED ON PREFLIGHT. ACFT GROUNDED. ENG DID NOT SHUT OFF WITH FIRE HANDLE PER MAINTENANCE PROCEDURES. UNABLE TO VERIFY DISCREPANCY. ACCOMPLISHED MAINT PROCEDURE ASSOCIATED WITH MEL 73-10 FOUR TIMES. NO DEFECTS NOTED. ENG NR 2 DECELERATES IMMEDIATELY UPON FIRE HANDLE BEING PULLED. VERIFIED NR 2 ENG HPSOV INDICATOR & NR 2 SPAR VALVE, ENG CIRCUIT BREAKERS ARE CLOSED. ENG SHUT OFF WITH START LEVER. REPAIR CONFIRMATION IAW FIM 73-06 TASK 804, CHECKED NORMAL. NR 2 ENG VALVE CLOSED LIGHT DIMMED, ILLUMINATED & EXTINGUISHED NORMALLY DURING SEVERAL ENG STARTS & SHUTDOWNS. POWERPLANT TESTS 12 & 13 CHECKED NORMAL IAW MM 71-00-00. ETOPS GND VERIFICATION SUCCESSFUL.

Part: UNKNOWN — MALFUNCTIONED · airframe 20,274 hrs · 6,706 cycles

NR 2 ENG VALVE CLOSED LT EXTINGUISHES WHEN ENG START LEVER RAISED TO IDLE (NOTE: START LEVER RAISED TO IDLE @GATE FOR VALVE SEQUENCE CHECK PRIOR TO ENG START). GROUNDED - YES. ON DEFERRAL.

Part: WIRE HARNESS — BROKEN (NR 1 FIRE LOOP) · airframe 19,933 hrs · 6,585 cycles

NR 1 ENGINE B LOOP DOES NOT TEST NORMALLY. ACFT GROUNDED. FOUND WIRE HARNESS MW326 BROKEN AT TOP OF ENGINE AREA. REPLACED THE WIRE HARNESS ASSY AND RESET THE CIRCUIT BREAKER. OPS NORMAL IAW AMM 26-11-02. VERIFIED ENGINE FIRE TEST SWITCH IN NORMAL POSITION.

Part: LAMP — INOPERATIVE (EMERGENCY LIGHT) · airframe 19,593 hrs · 6,472 cycles

EMERGENCY LIGHT RIGHT AFT FUSELAGE SLIDE LIGHT INOPERATIVE. ACFT GROUNDED. REPLACED THE LAMPS AND TESTED IAW AMM 33-51-04-960-801. OPS NORMAL.

Part: A/C PACK — TRIPPED (RIGHT) · airframe 19,569 hrs · 6,464 cycles

RIGHT PACK TRIPPED. RESET FOR 2 MINUTES. THEN TRIPPED AGAIN. WOULD NOT RESET THE SECOND TIME. ACFT GROUNDED. PERFORMED RESTORATION OF THE RT AIR CONDITIONING PACK IAW AMM 21-00-00-040-804. REPOSITIONED THE FWD CARGO HEAT DUCT SOV TO THE OPEN POSITION. REPOSITIONED RIGHT PACK AND RECIRCULATION SWITCH BACK TO THEIR NORMAL POSITIONS. GROUND RAN RT PACK FOR 3 HOURS. NO TRIP FAULT OCCURRED. ACCOMPLISHED AMM 21-61-00-700-806-002, PACK/ZONE TEMPERATURE CONTROLLER BITE TEST. FOUND TCV FAULT LOGGED ONE TIME. GROUND RAN RT PACK NO FAULTS LOGGED. SYSTEM CHECKED NORMAL. AS A PRECAUTION, REPLACED THE RT PACK DISCHARGE OVERHEAT SWITCH IAW AMM 21-51-42. WD 21-51-25. GROUND RAN RT PACK NO FAULTS LOGGED. SYS CHECKED NORMAL.

Part: WARNING LIGHT — FALSE ACTIVATION (FWD CABIN TEMP) · airframe 19,569 hrs · 6,464 cycles

FWD CABIN ZONE TEMP LIGHT ON WILL NOT RESET WITH MASTER CAUTION RESET. ACFT GROUNDED. DEACTIVATED RIGHT PACK FLOW CONTROL AND SHUTOFF VALVE, OPENED AND CLOSED THE CIRCUIT BREAKER. FWD CABIN ZONE TEMP LIGHT EXTINGUISHED AFTER CLOSING THE CIRCUIT BREAKER.

Part: FILTER — CLOGGED (FAN) · airframe 19,569 hrs · 6,464 cycles

STRONG BURNING ELECTRICAL ODOR IN THE FLIGHT DECK OCCURRED DURING SHUTDOWN CHECKLIST. DISSIPATED AFTER TURNING THE LEFT PACK OFF. TURNED LEFT PACK BACK ON AND ODOR DID NOT REOCURE. ISOLATION VALVE WAS RETURNED TO NORMAL WHEN GOT THE SMELL. ACFT GROUNDED. RAN THE LT PACK ON HIGH, NO SMOKE OR ELECTRICAL ODORS DETECTED. INSPECTED AND FOUND CABIN FAN FILTERS CAKED WITH LINT. CLEANED ALL THREE FILTERS AS REQUIRED. REINSTALLED. SYS CHECKED NORMAL.

Part: SEAL — OUT OF LIMITS (APU) · airframe 19,462 hrs · 6,427 cycles

APU SIGMA SEAL INSP FOUND SIGMA SEAL OUT OF LIMITS. GROUNDED - YES. REPLACED SIGMA SEAL ON APU REF AMM 49-15-11.

Part: APU — DEFECTIVE (APU BAY) · airframe 19,462 hrs · 6,427 cycles

APU CT5ATP TEMPERATURE CONTINUES TO BE ABOVE THE ESTABLISHED APU ON DEMAND THRESHOLD. GROUNDED - YES. REMOVED AND REPLACED APU. REF T/C 78349010. OPS CHECK GOOD.

Part: HF COMM — MALFUNCTIONED (NR 2) · airframe 19,128 hrs · 6,296 cycles

NR 2 HF RADIO TUNING PANEL SHOWS FAILED WHEN THE NR 2 HF IS SELECTED. ACFT GROUNDED. ACCOMPLISHED FIM 23-12, TASK 815. RADIO TUNING PANEL PROBLEM FAULT ISOLATION & HF COMMUNICATION SYSTEM BITE PROCEDURE IAW FIM 23-11, TASK 801, OPS CHECKED NORMAL. NO HISTORY LAST 90 DAYS.

Part: CONNECTOR — DISCONNECTED (PRESSURE SWITCH) · airframe 19,024 hrs · 6,260 cycles

NR 1 ENGINE HAS PREVIOUS REPORT OF FUEL FILTER DIFFERENTIAL PRESSURE SWITCH CONNECTOR FOUND DISCONNECTED. ACFT GROUNDED. REMOVED & REPLACED J8 HARNESS IAW AMM 73-21-06-400-801-F00. ACCOMPLISHED ACTUATORS TEST IAW AMM 71-00-00-700-807-F00. ALL TESTS PASSED WITH NO FAULTS. ACCOMPLISHED EEC TEST IAW AMM 73-21-00-700-804-F00. ALL TESTS PASSED WITH NO FAULTS.

Part: CONNECTOR — DISCONNECTED (FUEL SYSTEM) · airframe 18,923 hrs · 6,229 cycles

NR 1 FILTER BYPASS LIGHT ILLUMINATED ON TAXI IN, STAYED ON UNTIL SHUTDOWN. GROUNDED - YES. PERFORMED EEC BITE PER FIM 73-00 TASK 801 - FOUND FAULT CODE 73-31071 THE FUEL FILTER SIGNALS DISAGREE. FOUND CANON PLUG DISCONNECTED FROM NR 1 ENG FUEL FILTER DIFFERENTIAL PRESS SWITCH SW DP0803. RE-INSTALLED CANON PLUG, RAN NR 1 ENG ALL NORMAL INDICATIONS.

Part: AUTOLAND SYS — MALFUNCTIONED · airframe 18,724 hrs · 6,163 cycles

CAT IIIA HGS & AUTOLAND UNSUCCESFUL APPROACH WHEN AT 400' AGL AIRCRAFT TRACKING LEFT OF CENTERLINE. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 22-11 TASK 825 "AIRPLANE ALIGNMENT PROBLEMS DURING AUTOLAND APPROACH" FAULT ISOLATION, DFCS BITE LIBRARY TEST REF B737-900 AMM 22-11-00-740-806, DFCS LAND VERIFY TEST (GP 49) REF AMM 22-11-00-700-801 & HGS TEST REF HGS 4000 SMM 34-36-00, OPS CK NML. AIRCRAFT RELEASED FROM MEL 22-20B, MEL 22-99B & MEL 22-99C. AIRCRAFT LLM STATUS UPGRADED TO CAT3A AUTOLAND & HGS.

Part: CONTROLLER — FAULTED (NR 2) · airframe 18,706 hrs · 6,156 cycles

CONTROL CABIN ZONE TEMP ILLUMINATED, RAN QRH. THE LIGHT EXTINGUISHED BUT ILLUMINATED ON RECALL. TEMP NORMAL. ACFT GROUNDED. ACCOMPLISHED A BITE CHECK ON THE NR 1 & 2 CONTROLLERS, NR 1 GOOD, NR 2 FAULTED FOR FLT DECK TRIM VALVE. RESET THE NR 2 CONTROLLER, TESTED OK IAW FIM 21-61 TASK 801.

Part: FUEL NOZZLE — FAULTED (APU) · airframe 18,626 hrs · 6,132 cycles

APU CT5ATP EGT TREND DATA SHOWS EGT HAS SHIFTED ABOVE THE MAINTENANCE THRESHOLD OF 593 BUT LESS THAN 605 DEGREES. ETOPS SIGNIFICANT SYSTEM. ACFT GROUNDED. REMOVED AND REPLACED THE APU FUEL NOZZLES AND SHROUDS. OPS AND LEAK CHECKED GOOD IAW AMM 49-31-14. REMOVED AND REPLACED THE APU EGT THERMOCOUPLES. OPS AND LEAK CHECKED GOOD IAW AMM 49-71-21.

Part: ACTUATOR — FAILED (RT RAM AIR) · airframe 18,383 hrs · 6,057 cycles

RIGHT PACK LIGHT ILLUMINATES DURING RECALL. ACFT GROUNDED. FOUND RAM AIR INLET ACTUATOR FAULT ON PACK/ZONE TEMP CONTROLLER NR 2 BITE. REPLACED THE NR 2 PACK RAM AIR INLET ACTUATOR IAW AMM 21-51-21/400. OPS CHECKED GOOD.

Part: ACTUATOR — FAILED (LT RAM AIR) · airframe 17,924 hrs · 5,909 cycles

LEFT PACK LIGHT ILLUMINATED ON RECALL. GOES OFF ON RESET. ACFT GROUNDED. LT PACK ZONE TEMP CONTROLLER BITE IAW AMM 21-61-00-700-806-002, SHOWS HARD FAIL OF THE LT RAM AIR INLET ACTUATOR. REMOVED & REPLACED THE RAM AIR INLET ACTUATOR IAW AMM 21-51-21, GROUND FUNCTIONAL CHECKED NORMAL.

Part: LIGHT — INTERMITTENT (CONTROL PANEL) · airframe 17,758 hrs · 5,856 cycles

PRESSURIZATION CONTROL PANEL BACKLIGHTING INOPERATIVE. PRESSURIZATION OPERATES NORMALLY. ACFT GROUNDED. PERFORMED FIM 21-31, TASK 803, STEP G. LIGHTING ON PANEL RETURNED TO NORMAL. INTERMITTENT FAULT AND SYSTEM IS SERVICEABLE IAW FIM.

Part: FILTER — OBSTRUCTED (TEMP SENSOR) · airframe 17,709 hrs · 5,844 cycles

F/A REPORTED AN EXCESSIVELY HOT TEMPERATURE AT ROWS 6 - 12. TRIM AIR TURNED OFF IAW QRH. ACFT GROUNDED. RETURNED TRIM AIR SWITCH TO ON. BITE CHECKED BOTH ZONE TEMP CONTROLLERS IAW FIM 21-61, TASK 801, NO FAULTS. FOUND FWD ZONE FAN FILTER COMPLETELY BLOCKED. CLEANED IAW AMM 21-61-06. RAN BOTH PACKS WITH TEMP SELECTOR FULL COLD, COLD AIR COMING FROM ALL PSU'S. OPS NORMAL IAW AMM 21-61-00.

Part: SWITCH — FAILED (NR 1 ENGINE) · airframe 17,517 hrs · 5,787 cycles

NR 2 ENGINE, ENG VALVE CLOSED LIGHT IS BRIGHT WITH START LEVER IN CUTOFF. ACFT GROUNDED. PERFORMED FIM 73-06, TASK 804, FOUND THE HPSOV SWITCH RESISTANCE VALUES OUT OF LIMITS. REMOVED AND REPLACED HPSOV SWITCH IAW AMM 73-21-09/401. OPS CHECKED AND REPAIR CONFIRMATION SATISFACTORY. AIRCRAFT RETURNED TO NORMAL CONFIGURATION.

Part: ACTUATOR — FAILED (NR 2 SPAR VALVE) · airframe 17,399 hrs · 5,745 cycles

R/H "ENG VALVE CLOSED" IS BRIGHT WITH THE START LEVER IN THE CUTOFF POSITION. ACFT GROUNDED. REMOVED AND REPLACED THE NR 2 ENGINE SPAR VALVE IAW AMM 28-22-11. OPS CHECKED GOOD IAW AMM 28-22-00-710-801 ELECTRICAL CONTROL AND INDICATION TEST. GROUND VERIFICATION PASSED.

Part: LIGHT — INOPERATIVE (CONTROL PANEL) · airframe 16,441 hrs · 5,427 cycles

AFTER AIRBORNE, NOTICED LED LIGHTING ON PRESSURIZATION CONTROL PANEL BLANKED OUT. ALTERNAT LANDING ALT & OUTFLOW VALVE INDICATOR INOPERATIVE. ACFT GROUNDED. PERFORMED FIM 21-31, TASK 803. VERIFIED ALL CIRCUIT BREAKERS ON P6-4 WERE SET. LIGHTING RETURNED TO PANEL. ALL LIGHTING CHECKS OF PANEL CHECKED GOOD. NO FAULTS LOGGED ON DCPC1 OR 2. CHECKS GOOD FOR SERVICE.

Part: SHIM — WORN (NR 1 ENG FAN) · airframe 16,192 hrs · 5,352 cycles

NR 1 ENGINE SHIMS WORN. ACFT GROUNDED. REPLACED THE FAN BLADE SHIMS.

Part: FMC — MALFUNCTIONED (LEFT) · airframe 15,843 hrs · 5,219 cycles

LEFT FMC FAILED. ACFT GROUNDED. PERFORMED FIM 34-61, TASK 836, FMC DOES NOT OPERATE. NO DEFAULTS NOTED. GOOD FOR RETURN TO SERVICE.

Part: THERMOCOUPLE — FAILED (APU) · airframe 15,474 hrs · 5,090 cycles

ENGINEERING REQUESTS THE FOLLOWING TROUBLESHOOTING FOR CT5ATP FLUCTUATION. GROUNDED - YES. ACCOMPLISHED APU BITE CHECK, NO FAULTS NOTED, REF AMM 49-61-00-700-801. ACCOMPLISHED APU BLEED AIR LEAK CHECK, NO FAULTS NOTED, REF AMM 49-11-00-860-801. REMOVED AND REPLACED BOTH APU EGT THERMOCOUPLES, REF AMM 49-71-21-000-801 AND 49-71-400-801. APU OPS CHECK GOOD, REF AMM 49-11-00. ACCOMPLISHED APU BITE CHECK AGAIN, NO FAULTS NOTED, REF AMM 49-61-00.

Part: FMC — MALFUNCTIONED · airframe 15,128 hrs · 4,969 cycles

DUAL FMC FAILURE DURING CRUISE. AFTER A FEW MINUTES, BOTH FMCS BEGAN WORKING AGAIN FOR THE REMAINDER OF THE FLIGHT. ACFT GROUNDED. PERFORMED BITE PROCEDURES FOR FMC SYSTEM IAW FIM 34-61, TASK 801, NO FAULT NOTED, OK FOR SERVICE.

Part: UNKNOWN — MALFUNCTIONED (COCKPIT) · airframe 15,080 hrs · 4,950 cycles

VTK FLAG F/O SIDE, OPENED QRH TO FMC FAIL, BEFORE CHECKLIST WAS RUN FLAG DISAPPEARED AND NORMAL OPERATION WAS RESTORED. GROUNDED - YES. SYS OPS NML REF AMM TASK 34-61-00-860-801.

Part: PUMP — FAILED (FUEL BOOST) · airframe 15,050 hrs · 4,937 cycles

NR 1 AFT BOOST PUMP LOW PRESSURE LIGHT ILLUMINATED. ACFT GROUNDED. REMOVED AND REPLACED THE BOOST PUMP IAW AMM 28-22-41. OPERATIONAL AND LEAK CHECKED GOOD.

Part: PROBE — FAILED (TEMP) · airframe 14,926 hrs · 4,887 cycles

TEMPERATURE PROBE HEAT ILLUMINATED WITH PROBE HEAT TURNED ON. ACFT GROUNDED. REMOVED AND REPLACED TAT PROBE IAW AMM 34-21-06. OPS CHECKED TAT PROBE IAW AMM 30-31-00. ALL OPS CHECKED NORMAL.

Part: CONTROL VALVE — FAULTED (LT A/C PACK) · airframe 14,741 hrs · 4,819 cycles

ON RECALL, RT PACK LIGHT ANNUNCIATOR ILLUMINATED, EXTINGUISHED ON SYSTEM RESET. ACFT GROUNDED. ACCOMPLISHED PACK TEMP CONTROL BITE PROCEDURE. NR 1 TEMP CONTROL TEST PASSED NO FAULTS NOTED. NR 2 TEMP CONTROL SHOWED TCV FAULT IAW FIM 21-62 TASK 801. ACCOMPLISHED RIGHT TEMP CONTROL VALVE FAULT ISOLATION, FOUND TEMP VALVE STICKING DURING OPERATION. IAW FIM 21-62 TASK 831, REMOVED AND REPLACED THE RT PACK TEMP CONTROL VALVE. OPS AND LEAK CHECKED GOOD IAW AMM 21-51-10-000-801 AND 21-51-10-400-801. ACCOMPLISHED PACK TEMP CONTROL BITE TEST GROUND VERIFICATION, CHECKED GOOD. NO FAULTS NOTED ON NR 2 TEMP CONTROLLER IAW FIM 21-62 TASK 801.

Part: WARNING LIGHT — FALSE ACTIVATION (RT A/C PACK) · airframe 14,732 hrs · 4,815 cycles

RIGHT A/C PACK LIGHT ILLUMINATED AFTER RECALL. ACFT GROUNDED. RIGHT PACK PRIMARY TEMP CONTROL INOPERATIVE. BITE OF NR 2 CONTROLLER SHOWS TCV FAULT. FAULT CLEARS AND BITE GOOD IAW AMM 21-61-20-400-801.

Part: LAMP — INOPERATIVE (EMERGENCY LIGHT) · airframe 14,643 hrs · 4,783 cycles

L2 EXTERIOR EMERGENCY SPOTLIGHT INOPERATIVE. ACFT GROUNDED. REPLACED THE LAMP. OPS NORMAL.

Part: KEYBOARD — INOPERATIVE (COCKPIT DISPLAY) · airframe 14,076 hrs · 4,580 cycles

FIRST OFFICER`S FMC LINE SELECT KEY 6R INOPERATIVE. ACFT GROUNDED. REMOVED AND REPLACED FO CDU KEYBOARD. IAW AMM 34-61-01.

Part: ACTUATOR — FAILED (RAM AIR INLET) · airframe 13,769 hrs · 4,466 cycles

PUSHED OFF GATE AND RAN AFTER START CHECKLIST. AFTER SELECTING "RECALL", LEFT PACK LIGHT ILLUMINATED. RAN PACK CHECKLIST AND LIGHT EXTINGUISHED AFTER PUSHING MASTER CAUTION. ACFT GROUNDED. OBSERVED FAULT CODE 215-310-41. REPLACED RAM AIR INLET DOOR ACTUATOR, IAW AMM TASKS 21-51-21-00-801 AND 21-51-21-400-801. ACTUATOR CONNECTED AND CIRCUIT BREAKERS IN, LOCK OUT BOLT REMOVED AND RETURNED TO FLY AWAY BAG. GROUND VERIFY TESTS NORMAL, IAW AMM TASK 21-61-00-700-806-002.

Part: A/C PACK — MALFUNCTIONED (LEFT) · airframe 13,745 hrs · 4,455 cycles

AFTER START LEFT PACK LIGHT ILLUMINATED UPON RECALL. EXTINGUISHED AFTER PRESSING MASTER CAUTION RESET. ACFT GROUNDED. NR 1 TEMP CONTROL LOGGED RAM AIR ACT FAULT. ACCOMPLISHED AMM 21-61-00-700-806-002. SYSTEM TESTS GOOD.

Part: WARNING SYSTEM — FALSE ACTIVATION (COCKPIT) · airframe 13,602 hrs · 4,412 cycles

LEFT PACK LIGHT ILLUMINATED ON RECALL. ACFT GROUNDED. BITE OF CONTROLLERS DOES NOT SHOW ANY FAULTS. BOTH CONTROLLERS BITE GOOD, REF FIM 21-61-20-400-801.

Part: ANTENNA — FAILED (WEATHER RADAR) · airframe 13,585 hrs · 4,407 cycles

DURING THE FIRST 15 MINUTES OR SO OF RADAR USE IN AUTO RADAR SHOWED NUMEROUS FALSE RETURNS BETWEEN 160 AND ABOUT 120 NM. RETURNS STAYED AT SAME PLACE AND DID NOT GET CLOSER OVER TIME AS WOULD BE THE CASE IF THEY WERE ACTUAL WEATHER RETURNS. THERE WAS NO ACTUAL WEATHER IN VICINITY OF THE FALSE RETURNS. AFTER ABOUT 15 MINUTES FALSE RETURNS DISAPPEARED. FVR UNSATISFACTORY. ACFT GROUNDED. INSPECTED RADOME FOR DELAMINATION, WATER INTRUSION ABNORMALITIES. NO DEFECTS NOTED. REMOVED WEATHER ANTENNA AND DRIVE UNIT, REF AMM 34-43-11. INSPECTED WAVE GUIDE AT DRIVE UNIT CONNECTION. NO DEFECTS NOTED. REPLACED WEATHER ANTENNA AND DRIVE UNIT, REF AMM 34-43-11. GROUND VERIFICATION SUCCESSFUL, REF AMM 34-43-00-710-802-001 AND 34-43-00-730-802-001. TAXIED ACFT TO RUN UP AREA, CLEAR OF ALL BUILDINGS, ACFT AND SET UP ACFT AS DESCRIBED IN THIS DISCREPANCY AND PREVIOUS. NOTHING NOTED BETWEEN 160-120 NM.

Part: TRANSCEIVER — FAULTED (WX RADAR SYS) · airframe 13,583 hrs · 4,406 cycles

ENROUTE, WEATER RADAR SHOWS LARGE NUMBER OF RETURNS AT 160-120 NM. AS WE APPROACH THEY WOULD DISAPPEAR. WX RADAR GAIN WAS SET TO NORMAL ON BOTH SIDES AUTO ON WX+T ON BOTH SIDES. WX TEST DID NOT APPEAR TO WORK AND DISPLAYED WX FAIL AND PWS FAIL AFTER THE TEST. GROUNDED - YES. ACCOMPLISHED WXR SYTEM OPS TEST, TEST PASS. REPLACED WXR R/T WITH SERVICEABLE ONE. DID NOT DISCONNECT ADM. ACCOMPLISHED WXR SYTEM OPS TEST, TEST PASSES. REF B737-900 AMM 34-43-41-400-801 & 34-43-00-710-802-001. A/C REQUIRES FIRST 60-MINUTES OF ETOPS REVENUE FLT TO VERIFY WXR OPS NORMAL IN FLIGHT. VERIFICATION FLIGHT UNSATISFACTORY REF L/P 11581047. THIS CLEARS FVR DEFERRAL.

Part: OIL COOLER — LEAKING (APU) · airframe 13,456 hrs · 4,364 cycles

REF TSR908126: APU OIL MONITORING DATA SHOWS OIL CONSUMPTION TO BE TRENDING HIGHER THAN EXPECTED. ACCOMPLISHED FIM TASK 49-95-801 UP TO STEP E-1-B. WHILE ACCOMPLISHING TSR 908126 FOUND APU OIL COOLER LEAKING. ACFT GROUNDED. REPLACED APU OIL COOLER, REF AMM 49-91-41, LEAK CHECK GOOD.

Part: DISPLAY — MALFUNCTIONED (LEFT) · airframe 13,386 hrs · 4,341 cycles

LEFT MCDU BLANKED OFF 30 SECONDS, CAME BACK ON BITE PAGE, THEN NORMAL OPERATIONS. ACFT GROUNDED. SYSTEM TESTED GOOD IAW AMM TASK 34-61-00-710-801. NO HISTORY.

Part: EXCITER — FAILED (APU) · airframe 13,015 hrs · 4,216 cycles

APU FAULT LIGHT ILLUMINATED, FAILED TO START. ACFT GROUNDED. REMOVED AND REPLACED APU IGNITION EXCITER IAW AMM 49-41-31. OPS CHECKED GOOD.

Part: VALVE — FAILED (PRECOOLER) · airframe 13,012 hrs · 4,215 cycles

DUCT PRESSURE SPLIT OF 21 PSI AT CRUISE. LEFT 25 PSI, RIGHT 46 PSI AT FL 360, 90 PERCENT N1 BOTH LEFT AND RIGHT DUCT PRESSURE LOW IN CLIMB, FL 350 LEFT 20 PSI, RIGHT 24 PSI AT 101 PERCENT N1. ACFT GROUNDED. ACCOMPLISHED T/C NG-36WC-00001 ENGINE BLEED AIR SYS HEALTH CHECK OF BOTH NR 1 & 2 ENGINES. BOTH LT & RT PRECOOLER CONTROL VALVES FAILED HEALTH CHECK. NO OTHER DEFECTS NOTED. REPLACED BOTH LT & RT PRECOOLER CONTROL VALVES, IAW AMM 36-12-02/401. OPS & LEAK CHECKED GOOD. ACCOMPLISHED ENGINE BLEED AIR CROSSOVER OPS TEST ON LT & RT ENGINE BLEED AIR CONTROL SYSTEMS, TESTED NORMAL, IAW AMM 36-11-00-710-801.

Part: SATCOM — LOCKED · airframe 12,901 hrs · 4,178 cycles

SATCOM LOCKUP. ACFT GROUNDED. ACCOMPLISHED SATCOM RESET PROCEDURE PER QRH. SATCOM OPS RESTORED NORMAL.

Part: HMU — LEAKING (NR 2 ENGINE) · airframe 12,870 hrs · 4,168 cycles

NR 2 ENGINE EEC FAULT 73-30352, SHORT TERM FMV POSTION SIGNAL DISAGREE. NR 2 ENGINE EEC FAULT 73-20342 FMV POSITION SIGNAL OUT OF RANGE SHORT TERM. ACFT GROUNDED. ON INITIAL EVALUATION OF CONNECTOR DP0501 AND DP0601 FOUND FUEL PRESENT IN CONNECTORS AND RECEPTACLES. SUSPECT INTERNAL LEAK. REQUIRES HMU CHANGE IAW FIM 73-25 TASK 804. ACCOMPLISHED T/C 78273000, FAULT STILL ACTIVE. REMOVED AND REPLACED NR 2 ENGINE HMU IAW TASK CARD N8473000 AND TASK N8473001. OPS AND LEAK TESTED GOOD. NO FAULTS NOTED ON CDU.

Part: CONNECTOR — CONTAMINATED (NR 2 HMU) · airframe 12,768 hrs · 4,133 cycles

WHILE ACCOMPLISHING T/C 7827300 FAULT CODE, APPEARED ON NR 2 ENGINE. THE FMV POSITION SIGNALS DISAGREE. MUST BE CORRECTED IN 50 HRS. ACFR GROUNDED. REF LOG 11622130 FOR WORK ACCOMPLISHED. INITIAL EVALUATION HAD EEC CHANNEL B HMU RESOLVER COSINE RESISTANCE AT 27K OHMS WHEN RINGING FROM EEC CONNECTOR, DP0606. REF WDM 73-25-21. REMOVED DP601 FROM HMU FOR ISOLATION AND LOST HIGH RESISTANCE. NO DEFECTS NOTED IN WIRING HARNESS NOR HMU OR EEC CONNECTORS. WHEN HMU CONNECTORS RECONNECTED, ALL RESISTANCES FOR FMV RESOLVER AND TORQUE MOTOR WERE NOMINAL. SHOOK WIRING AND ALL READINGS STAYED STEADY. ACTUATORS TEST WAS NORMAL. 3 ENGINE STARTS AND ALL INDICATIONS NORMAL. WORK ACCOMPLISHED IAW FIM 73-25, TASKS 803 AND 804.

Part: DISPLAY — MALFUNCTIONED (COCKPIT) · airframe 12,319 hrs · 3,983 cycles

F/O CDU BLANKED MOMENTARILY AND ALL KEY PAD MESSAGE LIGHTS ILLUMINATED. AFTER APPROXIMATELY 30 SECONDS CDU RETURNED TO NORMAL. ACFT GROUNDED. TROUBLESHOT IAW FIM 34-61, TASK 804. APPEARS TO HAVE BEEN AN INTERMITTENT FAULT. HAS NO OTHER RECENT HISTORY.

Part: IGNITER — FAILED (APU) · airframe 12,299 hrs · 3,976 cycles

WHILE PERFORMING TSR 908005, FAULT CODE 49-41011 DISPLAYED ON APU BITE CHECK AND FAULT LIGHT ILLUMINATED. ACFT GROUNDED. DURING APU START UP NO NOISE HEARD FROM THE IGNITER PLUG. REPLACED IGNITER PLUG AND APU IGNITION UNIT REF AMM 49-41-51 AND 49-41-31. OPS TEST GOOD, BITE CHECK GOOD.

Part: IGNITER — FAILED (APU) · airframe 12,274 hrs · 3,967 cycles

APU FAULT LIGHT CAME ON AT ATTEMPTED START. ACFT GROUNDED. REPLACED IGNITER PLUG AND APU IGNITION UNIT IAW AMM 49-41-51 AND 49-41-31. OPS TEST GOOD, BITE CHECKED GOOD.

Part: GENERATOR — FAILED (APU) · airframe 12,250 hrs · 3,958 cycles

APU HAS HISTORY OF FAULT LIGHT ILLUMINATION WITH FAULT CODE 49-41254. ACFT GROUNDED. REPLACED APU STARTER GENERATOR REF AMM 49-41-21. OPS TEST GOOD NO LEAKS NOTED.

Part: WARNING LIGHT — FALSE ACTIVATION (APU) · airframe 12,232 hrs · 3,950 cycles

1ST ATTEMPT ON APU START AFTER LANDING GOT AN APU FAULT LIGHT. RAN QRH TURNED OFF APU SWITCH. AFTER APPROX 3 MIN LIGHT EXTINGUISHED. STARTED APU NORMALLY ON SECOND ATTEMPT. ACFT GROUNDED. FOUND FAULT 49-41254 LOGGED IN HISTORY. FOLLOWED FIM 49-40 TASK 821, NO HISTORY 30 DAYS. STARTED APU 3 TIMES, ALL STARTS GOOD. FAULT 49-41254 IN HISTORY ONLY. NO CURRENT FAULTS.

Part: CONTROL VALVE — FAILED (LT A/C PACK) · airframe 12,105 hrs · 3,913 cycles

LT PACK CAUTION LIGHT ILLUMINATES ON RECALL CANCELS W/ MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED BITE TEST OF NR 1 ZONE TEMP CONTROLLER REF AMM TASK 21-61-00-810-801. ZONE TEMP CONTROL INDICATES TCV FAILURE. REPLACED LT PACK TEMP CONTROL VALVE REF AMM 21-51-10. OPS CHK GOOD AND NO LEAKS FOUND.

Part: FILTER — CLOGGED (TEMP SENSOR) · airframe 11,827 hrs · 3,828 cycles

ON RECALL CHECK LT PACK AMBER LIGHT ILLUMINATES. LIGHT GOES OUT ON MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED PACK TEMP CONTROL BITE, NR 2 SHOWS NO FAULTS, NR 1 SHOWS THIS PACK TCV, VALVE 139. CLEARED FAULT. CLEANED ALL 3 CABIN TEMP SENSOR FILTERS AND REINSTALLED. RAN LT PACK FOR 60 MINUTES AND PACK LIGHT AND MASTER CAUTION REMAINED OFF. ACCOMPLISHED PACK TEMP CONTROL BITE, BOTH CONTROLLERS SHOW NO FAULTS, REF FIM 21-62, TASK 801, 21-62 TASK 830, AND AMM 21-61-06-100-801.

Part: WARNING LIGHT — FALSE ACTIVATION (APU) · airframe 11,567 hrs · 3,748 cycles

APU FAULT LIGHT DURING START. ACFT GROUNDED. FAULT CODE 49-41254 FOUND START CONVERTER UNIT SHOWS START SYSTEM INOPERATIVE. STARTED APU IAW FIM, TASK 49-40, TASK 821. GROUND VERIFICATION GOOD. APU ON DEMAND PROGRAM INOPERATIVE. SUCCESSFUL CSS MESSAGE RECEIVED. FAULT IS NO LONGER ACTIVE. APU STARTS NORMALLY IAW AMM 49-11-00.

Part: VALVE — FAILED (CABIN TEMP) · airframe 11,286 hrs · 3,653 cycles

CONT CAB ZONE TEMP LIGHT ILLUMINATES UPON MASTER CAUTION RECALL. ACFT GROUNDED. ACCOMPLISHED PZT CONTROL BITE, FAULT CONTROL CABIN VALVE CLEARED. DUE TO HISTORY R & R SAME. OPS & LEAK CHECK GOOD. GROUND VERIFICATION SUCCESSFUL. REF AMM 21-61-00-700-806-002, 21-61-21-000-801, 21-61-21-400-801.

Part: VALVE — FAILED (TEMP CONTROL) · airframe 11,286 hrs · 3,653 cycles

FLIGHT DECK TEMP CONTROL INOPERATIVE, WHEN TRIM AIR TURNED OFF CONTROLLER WORKED. ACFT GROUNDED. ZTP NR 1 AND NR 2 LOGGED NO FAULTS IN FAULT HISTORY AND NO EXISTING FAULTS REF FIM 21-62 TASK 801. ACCOMPLISHED FIM 21-61, TASK 861 A THROUGH K,1,B. R & R TRIM AIR PRSOV IAW AMM 21-62-01-000-801 AND AMM 21-62-01-400-801. OPS CHECK & LEAK CHECK OK IAW FIM TASK 21-61, TASK 861, PARA K 3.

Part: WARNING FLAG — FALSE ACTIVATION (MAP) · airframe 11,158 hrs · 3,609 cycles

"MAP" FLAG DISPLAYED ON CAPTAIN SIDE. ACFT GROUNDED. MOVED CAPTAIN ADIRU SWITCH TO ALIGN POSITION. GROUND VERIFICATION TEST NORMAL, FIM TASK 34-61-00.

Part: SENSOR — FAILED (CABIN TEMP) · airframe 11,033 hrs · 3,568 cycles

CONTROL CABIN CONTROLLER NOT KEEPING UP, BLOWING COOL AIR IN FULL HOT POSITION, FINALLY STARTED TO WORK AFTER 10 MIN. ACFT GROUNDED. TROUBLESHOT IAW FIM TASK 21-61 TASK 801. COULD NOT DUPLICATE FAULT. PERFORMED ZTC BITE, NO FAULTS NOTED, REF FIM 21-62 TASK 801. R & R CABIN TEMPERATURE SENSOR, REF AMM 21-61-10. OPS TEST NORMAL.

Part: MODULE — FAILED (CABIN TEMP) · airframe 11,008 hrs · 3,559 cycles

AT CRUISE, THE FLIGHT DECK DOES NOT STAY WARM ENOUGH WITH THE CONTROL CABIN TEMP SELECTOR FULLY WARM, THE SUPPLY DUCT TEMP FOR THE CONTROLLER CABIN WILL NOT GO WARMER THAN 30 DEGREES C. ACFT GROUNDED. RECONNECTED D492 ON THE RT FLOW CONTROL AND SHUTOFF VALVE. ACCESSED THE FWD CARGO HEAT CONTROL VALVE AND PLACED THE LEVER TO THE ON POSITION. ACCOMPLISHED LT AND RT PACK/ZONE TEMPERATURE CONTROLLER BITE REF AMM 21-61-00. NO FAULTS LOGGED ON EITHER CONTROLLER. ACCOMPLISHED LT AND RT PACK OPS TEST REF AMM 21-61-00. FOUND FLIGHT DECK TEMP NOT ABLE TO ADJUST TO WARM. REMOVED AND INSTALLED NEW P5-17 TEMP CONTROL PANEL. ACCOMPLISHED LT AND RT PACK OPS TEST REF AMM 21-61-00 AGAIN AND SYS WORK NORMAL. ACCOMPLISHED LT AND RT PACK/ZONE TEMPERATURE CONTROLLER BITE REF AMM 21-61-00. NO FAULTS LOGGED. SECURED THE FWD CARGO HEAT DUCT CLOSED IAW AMM 21-00-00/901. REACTIVATED THE RIGHT PACK AIRFLOW SHUTOFF VALVE CLOSED IAW AMM 21-00-00/901. PLACED THE RT PACK SWITCH FOR THE INOPERATIVE PACK BACK TO NORMAL POSITION. PLACED THE RT RECIRCULATION FAN SWITCH TO NORMAL POSITION. FRONT PACK D492 IS RECONNECTED AND FWD HEAT CONTROL VALVE IS PLACED TO ON POSITION. POSITION THE TRIM AIR SWITCH TO NORMAL POSITION REACTIVATED THE RT PACK.

Part: SENSOR — DIRTY (CABIN TEMP) · airframe 10,972 hrs · 3,545 cycles

CONTROLLER CABIN SUPPLY AIR IS 23 DEG C. NO MATTER WHERE CONTROLLER CABIN AUTO SWITCH IS POSITIONED TO. DURING LAST 45 MIN OF FLIGHT SYS SEEMED TO RESPOND TO POSITION OF CABIN CONTROLLER SWITCH FOR ABOUT 15 MIN THEN RETURNED TO LESS THAN 20 DEG C. ACFT GROUNDED. PERFORMED CABIN TEMP CONTROLLER BITE PROCEDURE REF FIM 21-61-00-810-801. BOTH CONTROLLERS SHOWED NO FAULTS. FOUND CONTROL CABIN TEMPERATURE SENSOR DIRTY. CLEANED CONTROL CABIN TEMP SENSOR REF AMM 21-61-10 AND REPLACED TEMP SENSOR FILTER REF AMM 21-61-06. OPERATED BOTH PACKS AND VARIED ZONE TEMP SELECTORS FOR EXTENDED PERIOD. ALL PACK SYS INDICATIONS AND CABIN TEMPERATURE RESPONDED NORMALLY TO SELECTOR POSITIONS.

Part: WARNING MESSAGE — FALSE ACTIVATION (CABIN TEMP) · airframe 10,903 hrs · 3,517 cycles

WITH FULL WARM SELECTED ON FWD AND AFT CAB TEMP, MAX SUPPLY DUCT TEMP IS 26 AT FL 350. ACFT GROUNDED. ACCOMPLISHED CABIN TEMP CONTROL BITE NO FAULTS NOTED, OPS CHECK CYCLED PACKS THROUGH FULL CYCLE, TEMP RANGE, REF AMM 21-60-00.

Part: ENGINE — HUNG START (NR 1) · airframe 10,817 hrs · 3,486 cycles

HUNG START, NR 1 ENGINE INDICATION, N1 AND N2 FUEL FLOW NO EGT, ABORTED START FOLLOWED QRC PROCEDURES IGNITION SWITCH IN THE RT POSITION. ACFT GROUNDED. REMOVED NR 1 ENGINE RT IGNITION LEAD AND INSPECTED, CHECKS NORMAL. REINSTALLED IGNITION LEAD REF AMM 74-21-01. RAN ENGINES 3 TIMES AND GROUND VERIFICATION WAS SUCCESSFUL.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 10,811 hrs · 3,484 cycles

FMC DISAGREE ON GROUND. ACFT GROUNDED. ACCOMPLISHED RESET PROCEDURE IAW QRH. FMCS RESTORED NORMAL.

Part: LENS — MISSING (EMERGENCY LIGHTS) · airframe 10,776 hrs · 3,475 cycles

LIGHT COVER ROW 8 MISSING, EMERGENCY. ACFT GROUNDED. REPLACED MISSING COVER ON OVERHEAD EMERGENCY LIGHT, OK FOR SERVICE.

Part: SHIM — WORN (NR ENG FAN BLADE) · airframe 10,623 hrs · 3,420 cycles

REF T/C 78472002, FOUND SHIMS WORN ON NR 2 ENGINE, SN 962761. ACFT GROUNDED. SHIMS REPLACED AND INSTALLATION ACCOMPLISHED ON T/C 78472002. FAN BLADE LUBRICATION.

Part: WINDSHIELD — FAILED (FLIGHT DECK) · airframe 10,377 hrs · 3,333 cycles

R1 COCKPIT WINDOW OVERHEAT ANNUNCIATOR ILLUMINATED, SWITCH SELECTED OFF FOR 10, THEN 20 MINUTES IN CRUISE, SAME OVERHEAT REMAINED ON. AT TOP OF DESCENT ON WAS AGAIN SELECTED AND OVERHEAT DID NOT ILLUMINATE-NORMAL OPS UNTIL 6000' THEN OVERHEAT ILLUMINATED AGAIN. ACFT GROUNDED. WHCU SHOWS SENSOR FAULT LAST LEG. FLIPPED SWITCH TO ALTERNATE SENSOR. NO HELP. OVERHEAT LIGHT COMES ON INSTANTLY. REMOVED R1 WINDOW IAW AMM 56-11-11. STARTED INSTALL OF R1 WINDOW IAW AMM 56-11-11-400-801 STEPS F 1-4, NEW WINDOW HEAT CODE IS H11 MOVED POWER TAP AT TB5012 TO POSITION 3, REF AMM 30-41-21. COMPLETED R1 WINDOW INSTALLATION IAW AMM 56-11-11-400-801. OPS TEST GOOD.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 10,331 hrs · 3,316 cycles

ON THE GROUND "FMC DISAGREE" MESSAGE ANNUNCIATED. ACFT GROUNDED. PERFORMED FMC DISAGREE MESSAGE ON THE GROUND QRH CHECKLIST AND ANOMALLY DISAPPEARED.

Part: WARNING LIGHT — FALSE ACTIVATION (LT A/C PACK) · airframe 10,241 hrs · 3,289 cycles

ON RECALL LT PACK LIGHT ILLUMINATED. RAN QRH, MASTER CAUTION LIGHT GOES OUT. SINGLE CONTROLLER FAULT. ACFT GROUNDED. RESET SYSTEM, RAN AIRCON SYSTEM NR 1 AND NR 2 PACKS, NO ISSUES. ALSO TESTED SYSTEM IAW AMM 21-60-00-700-806, SYS PASSES.

Part: FMC — MALFUNCTIONED (RIGHT) · airframe 9,822 hrs · 3,143 cycles

RIGHT FMC FAILED. ACFT GROUNDED. REBOOTED FMC, TESTS GOOD IAW FIM 34-61, FMC BITE.

Part: FMC — FAULTED (LEFT) · airframe 9,786 hrs · 3,131 cycles

TECH SERVICES REQUESTS FOLLOW-UP TO HISTORY OF FMC FAULTS ON CAPTAINS SIDE. ACFT GROUNDED. R & R LT FMCS COMPUTER IAW AMM TASK 34-61-02-000-801 AND 34-61-02-400-801. LOADED SOFTWARE IAW AMM TASK 34-61-00-470-806. VERIFIED AND SET DRAG FACTOR IAW AMM 34-61-00-800-801. PERFORMED FMCS COMPUTER OPS TEST IAW AMM TASK 34-61-00-710-801.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 9,742 hrs · 3,117 cycles

FOR LESS THAN A MINUTE HAD FMC FAILURE ON CAPTAIN SIDE, PICKED UP QRH AND IT FIXED ITSELF. ALL FMC OPERATIONS NORMAL AFTER THAT. ACFT GROUNDED. PERFORMED FMC BITE PROCEDURE REF FIM 34-61, TASK 801. NO IN-FLIGHT OR SENSORS FAULT DETECTED.

Part: VALVE — FAILED (CABIN TEMP) · airframe 9,709 hrs · 3,110 cycles

CONT. CAB, ZONE TEMP LIGHT ILLUMINATED, EXTINGUISHES ON RECALL. ACFT GROUNDED. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST REF AMM21-61-00. NR 2 CONTROLLER SHOWS FLT DECK TRIM VALVE FAULT. R & R SERVICEABLE CONTROL CABIN TRIM VALVE. OPS AND LEAK CHECKED OK. OPS NORMAL, REF AMM21-61-21-400-801, 21-61-21-000-801.

Part: FMC — MALFUNCTIONED (NR 1) · airframe 9,672 hrs · 3,099 cycles

APPROXIMATELY 2 HOURS AFTER DEPARTURE, HAD "VTK" FOLLOWER BY "MAP" FLAGS ON CAPTS NAV DISPLAY AS WELL AS NO FMC DATA ON BOTH CDU. COMPLETED QRH CHECKLIST. UNABLE TO RESTORE DUAL FMC OPERATIONS. CONTINUED WITH FMC SWITCH ON "BOTH ON R". ACFT GROUNDED. MOVED FMC SWITCH TO NORMAL, VERIFIED "VTK & MAP". ACCOMPLISHED FIM 34-61, TASK 807, CYCLED FMC COMPUTER 1 C/B, FMC RESTORED TO NORMAL. NO HISTORY FOR LT FMC 30 DAYS, FMC GROUND TEST NORMAL.

Part: FMC — MALFUNCTIONED (RIGHT) · airframe 9,350 hrs · 2,997 cycles

RIGHT FMC FAILED AND NEVER RESET ITSELF. SWITCH FMC BOTH ON LT. ACFT GROUNDED. ACCOMPLISHED OPS CHECK, REF AMM 34-61-00. GROUND VERIFICATION SUCCESSFUL.

Part: FAULT CODE — ACTIVATED (NR 1 ENGINE) · airframe 8,990 hrs · 2,889 cycles

ACCOMPLISHED T/C 78273000, FOUND FAULT 73-30311, NR 1 ENGINE START SWITCH SIGNAL & BUS DATA DISAGREE, SHORT TERM FAULT. ACFT GROUNDED. ACCOMPLISHED T/C 78273000, FAULT NO LONGER ACTIVE. THIS CLEARS PLT.

Part: ACTUATOR — FAILED (NR 1 ENGINE) · airframe 8,530 hrs · 2,744 cycles

DURING PREFLIGHT, DISCOVERED NR 1 ENGINE SPAR VALVE BRIGHT BLUE. IN DISAGREEMENT WITH START LEVER POSITION. ACFT GROUNDED 2W. REPLACED LT SPAR VALVE ACTUATOR IAW MM 28-22-11. OPS CHECKS GOOD.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 8,494 hrs · 2,735 cycles

ON GROUND WE GOT AMBER "FMC DISAGREE" LIGHT ON BOTH ND'S. ACFT GROUNDED. WE RAN QRH FOR FMC DISAGREE ON THE GROUND AND HAD MESSAGE NO LONGER DISPLAYED.

Part: CONVERTER — INOPERATIVE (APU STARTER) · airframe 8,322 hrs · 2,685 cycles

ATTEMPTED SEVERAL APU STARTS, APU WOULD NOT FIRE OFF. RECEIVED AN AMBER FAULT LIGHT ON ALL ATTEMPTS. CURRENT STATUS SHOWS MAINTENANCE MESSAGE 49-41251. ACFT GROUNDED. COMPLIED WITH TROUBLESHOOTING IAW FIM 49-40, TASK 812. REPLACED APU START CONVERTER UNIT IAW AMM 49-41-61-000-801 AND 49-41-61-400-801. OPS TESTED GOOD AND CURRENT STATUS BITE SHOWS NO FAULTS IAW AMM 49-61-00-700-801.

Part: CONVERTER — FAULTED (EE BAY) · airframe 8,300 hrs · 2,678 cycles

APU FAULT LIGHT ILLUMINATED DURING APU START IAW QRH, WAITED 5 MINUTES LIGHT EXTINGUISHED AFTER ABOUT 3:30 MINUTES. SECOND START NORMAL AND SUCCESSFUL. OAT 36C. ACFT GROUNDED. DURING START APU CURRENT STATUS FAULTS 49-41251 SCU SHOWS HIGH TEMPERATURE. REPLACED APU SCU REF MM 49-41-61, GROUND VERIFICATION TEST PASSED.

Part: CONTROL VALVE — FAILED (A/C BAY) · airframe 8,185 hrs · 2,640 cycles

WITH TRIM AIR ON NO CONTROL OF CABIN TEMP. FOLLOWED QRH WITHOUT FIXING PROBLEM. SELECTED TRIM AIR OFF. UNABLE TO CONTROL TEMP IN ALL ZONES. ACFT GROUNDED. ACCOMPLISHED ZONE TEMP CONTROLLER BITES, NR 1 ZONE TEMP CONTROLLER. SHOWS TCV FAIL ON VERIFY, IAW MM 21-61-00-700-806-002. REPLACED NR 1 PACK TEMP CONTROL VALVE REF AMM 21-51-10-000-801. ACCOMPLISHED BITE TEST. PASSED. RAN PACKS AND LEAK CHECKED AND OPS CHECKED GOOD. TEMP CONTROLLER ABLE TO CONTROL NORMAL. GROUND VERIFICATION CHECKED GOOD.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 7,993 hrs · 8,932 cycles

FMC DISAGREE ON GROUND DURING TAXI. ACFT GROUNDED. QRH PROCEDURE ACCOMPLISHED. AC OK FOR SERVICE.

Part: WARNING LIGHT — FALSE ACTIVATION (WINDOW HEAT) · airframe 7,849 hrs · 2,530 cycles

RIGHT FWD WINDOW OVERHEAT LIGHT ON. ACFT GROUNDED. FOUND CB WINDOW HEAT POWER FRONT RIGHT OUT. DETERMINED CB COULD BE RESET IAW MM 20-60-01. WINDOW HEAT SYSTEM OPS TEST NORMAL IAW MM 30-41-00. ETOPS SIGNIFICANT SYSTEM - GROUND VERIFICATION SUCCESSFUL.

Part: ELECTRICAL SYS — MALFUNCTIONED · airframe 7,538 hrs · 2,426 cycles

EXTERNAL POWER DROPPED OFF LINE. APU STARTED AND PLACED ON BUSSES. ABOUT 5 MINUTES LATER APU GENERATOR DROPPED OFF LINE. NO APU AVAILABLE LIGHT. EXTERNAL POWER RESET AND PLACED BACK ON BUSS. APU AVAILABLE LIGHT CAME BACK ON AFTER A FEW MINUTES. ACFT GROUNDED. PERFORMED APU BITE IAW FIM 49-60, TASK 801. NO FAULTS, CURRENT OR RELEVANT FAULT HISTORY, FOUND. RAN APU & APPLIED GEN BUSSES & ELECTRICAL LOAD FOR 15 MINS IAW AMM 49-11-00, NO FAULTS FOUND. VOLTS & FREQUENCIES NORMAL AND APU GENERATOR REMAINS ON LINE. NO HISTORY LAST 30 DAYS. ETOPS SIGNIFICENT SYS - GROUND VERIFICATION SUCCESSFUL.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 7,417 hrs · 2,385 cycles

FMC DISAGREE AFTER ENGINE START. ACFT GROUNDED. RESET USING QRH PROCEDURES, OPS NORMAL.

Part: FMC — MALFUNCTIONED · airframe 7,313 hrs · 2,353 cycles

DURING TAXI OUT, FMC DISAGREE APPEARED IN MCDU SCRATCH PAD AND BOTH CAPTAIN & F/O ND. ACFT GROUNDED. RAN FMC DISAGREE QRH, PG 11.2, SYSTEM RESET NORMAL.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 7,196 hrs · 2,316 cycles

DURING CRUISE, NOTICED SAT PROMPT WAS NOT DISPLAYED ON MCDU MENU PAGE. ACFT GROUNDED. PERFORMED SATCOM LOCK UP PROCEDURE IN QRH. SAT PROMPT RESTORED ON MCDU.

Part: SHIELD — DETERIORATED (NR 1 FIRE LOOP) · airframe 7,167 hrs · 2,304 cycles

NR 1 ENGINE WIRE HARNESS SHIELD DETERIORATED. ACFT GROUNDED. REPLACED CORE FIRE DETECTION WIRE HARNESS IAW MM 26-11-02. OPS NORMAL.

Part: SNUBBER — OUT OF ADJUST (L2 DOOR) · airframe 7,057 hrs · 2,270 cycles

L2 DOOR BINDS ON OPENING. ACFT GROUNDED. FOUND SNUBBER CAUSING BINDING & GUIDE ARM OUT OF RIG. REMOVED L-2 DOOR SNUBBER & INSTALLED SERVICEABLE SNUBBER. TESTED GOOD REF AMM 52-13-51-000-801 & 52-13-51-400-801 STEP3, B, C, D, E & F & STEP F. ADJUSTED L-2 DOOR GUIDE ARM REF AMM 52-13-00-820-801, STEPS 2. I. L, A, B 1 THRU 12. ACCOMPLISHED DOOR SYS TEST. TESTED GOOD REF AMM 52-13-00-700-805.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 6,999 hrs · 2,251 cycles

FMC DISAGREE OCCURRED ON GROUND AFTER FLAPS EXTENDED. ACFT GROUNDED. FMC DISAGREE CLEARED AFTER ACCOMPLISHING QRC PROCEDURE.

Part: COVER — MISSING (EMERGENCY LIGHT) · airframe 6,909 hrs · 2,218 cycles

EMERGENCY EXIT LIGHT COVER MISSING AT ROW 17, LT SIDE. ACFT GROUNDED. R & R EMERGENCY EXIT LIGHT ASSY L1507 EMERGENCY LIGHTS, OPS NORMAL IAW 33-51-00.

Part: START VALVE — FAILED (NR 1 ENGINE) · airframe 6,886 hrs · 2,210 cycles

START VALVE NR 1 STAYED OPEN AFTER START. ACFT GROUNDED. R & R NR 1 ENG START VALVE IAW AMM 80-11-03. NR 1 ENG START VALVE TESTS GOOD. ETOPS GROUND VERIFICATION SUCCESSFUL.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 6,802 hrs · 2,183 cycles

FMC DISAGREE DURING TAXI . ACFT GROUNDED. QRC FOLLOWED. OPS RESTORED NORMAL.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 6,719 hrs · 2,156 cycles

ON THE GROUND, AFTER ENGINE START RECEIVED A FMC DISAGREE MESSAGE. ACFT GROUNDED. PERFORMED QRH FMC DISAGREE PROCEDURE. NORMAL OPS RESTORED.

Part: FMC — FAILED · airframe 6,200 hrs · 1,972 cycles

CREW REPORTED LT FMC FAILED FOR APPROXIMATELY 1 MIN, LT FMC RECOVERED BEFORE STARTING FMC PROCEDURES IN QRH. ACFT GROUNDED. PERFORMED FIM TASK 34-61-801. NO FAULTS FOUND. NO HISTORY FOR 30 DAYS.

Part: FMC — MALFUNCTIONED (RIGHT) · airframe 6,198 hrs · 1,971 cycles

RT FMC FAIL DID NOT RESET. ACFT GROUNDED. NO HISTORY OF FAULT LAST 60 DAYS. CYCLED PWR TO RT FMC & GROUND FUNCTIONAL TEST GOOD REF FIM 34-61, TASK 801.

Part: FMC — FAILED (RIGHT) · airframe 6,203 hrs · 1,973 cycles

RIGHT FMC FAILED. ACFT GROUNDED. ACCOMPLISHED FMCS OPS TEST REF AMM 34-61-00-710-801, OPS CK GOOD. ACCOMPLISHED FMC DOES NOT OPERATE FIM TASK REF FIM 34-61/836, OPS CK GOOD. DFCS BITE CK GOOD AND NO HGS FAULTS.

Part: WARNING LIGHT — FALSE ACTIVATION (COCKPIT TEMP) · airframe 5,986 hrs · 1,900 cycles

CONT CABIN ZONE TEMP LT ON RECALL, RESETS W/ MASTER CAUTION. ACFT GROUNDED. NO FAULTS NOTED AT THIS TIME. OPERATES NORMAL.

Part: CONTROLLER — MALFUNCTIONED (CABIN TEMP) · airframe 5,906 hrs · 1,872 cycles

CABIN ZONE TEMP CONTROLLER LIGHT ON RECALL, LIGHT GOES OUT ON MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED BITE ZONE TEMP CONTROLLER BITES, TEST 1, NO FAULTS. CONTROLLER 2 SHOWS FLT FAULT TRIM AIR MODIFIED VALVE, V143, REF MM 21-61-00-700-806-002 REPLACED THE CONTROLLER. CABIN TRIM AIR MODIFIED VALVE ASSY REF MM 21-61-21.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 5,650 hrs · 1,794 cycles

FMC DISAGREE ON GROUND AFTER ENGINE START. ACFT GROUNDED. MESSAGE CLEARED AFTER FOLLOWING QRH PROCEDURE.

Part: ELECTRICAL SYS — ABNORMAL · airframe 5,302 hrs · 1,689 cycles

ACFT EXPERIENCED POWER INTERRUPTION SHORTLY BEFORE PUSHBACK. FMC DISAGREE LIGHT ILLUMINATED AFTER PUSHBACK. ACFT GROUNDED. LIGHT CLEARED AFTER QRH PROCEDURES ACCOMPLISHED.

Part: CONTROL VALVE — MALFUNCTIONED (LT A/C PACK) · airframe 5,190 hrs · 1,652 cycles

LEFT PACK LIGHT ILLUMINATED ON RECALL, RESET GOES OUT. ACFT GROUNDED. R & R LT PACK TC VALVE. OPS & LEAK CHECKED GOOD IAW MM 21-51-10.

Part: LAMP — INOPERATIVE (EMERGENCY LIGHT) · airframe 4,949 hrs · 1,578 cycles

FOUND R1 DOOR SLIDE, OVERWING LIGHT INOPERATIVE. ACFT GROUNDED. REPLACED THE LAMP IAW AMM TASK 33-51-04-960-801. OPS TESTED NORMAL.

Part: FILTER ELEMENT — ABNORMAL (APU) · airframe 4,859 hrs · 1,547 cycles

DURING SERVICE CHECK, FOUND APU DELTA "P" INDICATOR FOR APU OIL FILTER POPPED. ACFT GROUNDED. ACCOMPLISHED APU OIL FILTER DELTA "P" INDICATOR FILTER REPLACEMENT REF MM 49-91-13, NO FAULTS FOUND.

Part: REGULATOR — FAILED (NR 1 ENGINE) · airframe 4,563 hrs · 1,464 cycles

DUCT PRESSURE AS FOLLOWS AT 10000 FT, RT 40 PSI, LT 25 PSI AT 20000' RT 40 PSI, LT 22 PSI, 25000' RT 40 PSI, LT 20 PSI AT CRUISE FL370, RT 38 PSI, LT 20 PSI. 5 MINUTES INTO CRUISE FLIGHT 39 PSI, LT 39 PSI IT CORRECTED AND STABILIZED AT CRUISE WHEN ATC ASKED FOR .76 MACH OR GREATER SPLIT RT 38 PSI LT 23 PSI. STABILIZED 5 MINUTES LATER TO 39 PSI RT AND LT. ACFT GROUNDED. T/S NR 1 ENGINE BLEED SYS IAW T/C NG-36WC-00002-1, COMPLETED UP TO STEP 4. C, 1. FOUND BAD PRECOOLER CONTROL VALVE AND BAD HIGH STAGE VALVE. HIGH STAGE REGULATOR FAILED HEALTH CHECK. REMOVED HIGH STAGE REGULATOR REF MM 36-11-07-000-801. INSTALLED NR 1 ENGINE HIGH STAGE REGULATOR REF AMM 36-11-07. COMPLETED ENGINE BLEED AIR CROSSOVER OPS TEST REF AMM 36-11-00-710-801. OPS AND LEAK CHECKS NORMAL.

Part: VALVE — FAILED (NR 1 ENGINE) · airframe 4,561 hrs · 1,463 cycles

DURING CLIMBOUT, RT DUCT PRESSURE 38 PSI, LT DUCT PRESSURE 15 PSI DUCT DIFFERENTIAL OF 23 PSI AROUND FL 250. 20 PSI DIFFERENTIAL AT CRUISE. ACFT GROUNDED. PERFORMED T/C NG-36WC-00001, FOUND HSV BAD. REPLACED REF MM 36-11-06. REPAIR CONFIRMATION DONE REF FIM TASK 36-10 TASK 807. ENGINE RUN NO DEFECTS NOTED.

Part: FMC — UNKNOWN · airframe 4,423 hrs · 1,422 cycles

DURING APPROACH, PDX HAD LINE THROUGH 110.5. RECEIVED GOOD ID ON FREQ BUT LINE NEEDLE LT AND 110.5 DISAPPEARED INSTEAD OF LOCATED ID IJMJ. ACFT GROUNDED. PERFORMED DFCS FAULT HISTORY TEST LEG 1 (FMC DATA INVALID). PERFORMED FMC OPS TEST IAW 34-61-00. OPS CHECKED GOOD. OK FOR CONTINUED SERVICE.

Part: COMPENSATOR — FAILED (RT FUEL CELL) · airframe 4,323 hrs · 1,392 cycles

RIGHT FUEL QUANTITY INDICATION IS BLANK. ACFT GROUNDED. REPLACED RT COMPENSATOR UNIT REF AMM 28-41-21. SYSTEM TEST NORMAL AND PANEL LEAK CHECKED GOOD.

Part: FMC — INTERMITTENT · airframe 3,957 hrs · 1,274 cycles

RIGHT FMC NAVIGATIONAL DISPLAY MAP & VTK. ACFT GROUNDED. ACCOMPLISHED FIM 34-61 TASK 836, OPS CHECKED GOOD. FAULT WAS INTERMITTENT IAW STEP E(C)2.

Part: RADAR — MALFUNCTIONED (WX RADAR) · airframe 3,767 hrs · 1,217 cycles

WX RADAR DOES NOT SEEM TO MATCH ACTUAL WEATHER/PRECIPITATION OUTSIDE THE ACFT AS DEPICTED BY ATC RADAR OR VISUALLY. ACFT GROUNDED. ACCOMPLISHED WEATHER RADAR OPS CHECKED IAW AMM 34-43-00, OPS CHECKED NORMAL WITH NO HISTORY IN 30 DAYS. ALL GROUND FUNCTIONAL TESTS PASS.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 3,679 hrs · 1,190 cycles

FMC DISAGREE ON THE GROUND. ACFT GROUNDED. ACCOMPLISHED QRH AND FMC DISAGREE, NO LONGER DISPAYED.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 3,632 hrs · 1,179 cycles

CAPTAIN'S FMC DISPLAYED VTK AND BOTH MFC DU'S FMC FUNCTIONS BLANKED THEN RESTORED WITHOUT CREW ACTION - NORMAL OPS AFTER. ACFT GROUNDED. ACCOMPLISHED FIM TASK 34-62/836. RESET OF FMC OK. OK FOR SERVICE.

Part: WARNING LIGHT — INTERMITTENT (ELECTRICAL) · airframe 3,568 hrs · 1,160 cycles

AFTER PUSH BACK AND ENGINE START, ENGINE GERNERATORS ON, ELECTRIC ANNUNCIATOR LIGHT ON OVERHEAD PANEL REMAINED ILLUMINATED. ACFT GROUNDED. PERFORMED ELECTRICAL BITE PROCEDURE REF FIM 24-31 TASK 801 FOUND 3 FAULT CODES ALL WITH THE LETTER "I". MANUAL STATES THEY ARE INTERMITTENT FAULTS THAT NO LONGER EXIST. FAULTS CLEARED, OK FOR SERVICE.

Part: PRECOOLER — FAILED (NR 1) · airframe 2,813 hrs · 914 cycles

AT FL430, DUCT PRESSURE AS FOLLOWS L=26, R=42. ACFT GROUNDED. WHILE ACCOMPLISHING TASK CARD NG-36WC-00001, BLEED AIR SYS HEALTH CHECK, FOUND THAT THE NR 1 PRECOOLER VALVE AND NR 1 HIGH STAGE REGULATOR FAILED BLEED AIR SYS HEALTH CHECK. R & R THE NR 1 PRECOOLER CONTROL VALVE AND HIGH STAGE REGULATOR , REF AMM 36-12-02/401 AND 36-11-07/401. OPS CHECKS NORMAL. NO LEAKS NOTED. OPS CHECK GOOD IN REF TO AMM 36-11-710/801.

Part: FILTER — FAILED (APU OIL) · airframe 2,497 hrs · 813 cycles

FOUND APU OIL FILTER RED BUTTON, DELTA-P, EXTENDED. ACFT GROUNDED. R & R APU OIL FILTER IAW AMM 49-91-12. RESET APU OIL FILTER HOUSING RED BUTTON. NO OTHER DEFECTS, LEAK CHECK GOOD.

Part: WARNING MESSAGE — FALSE ACTIVATION (FMC) · airframe 2,324 hrs · 752 cycles

FMC DISAGREE ILLUMINATED. ACF GROUNDED. QRH PROCEDURE CARRIED OUT AND NORMAL OPS RESTORED.

Part: WARNING LIGHT — FALSE ACTIVATION (APU OIL) · airframe 2,304 hrs · 746 cycles

APU MAINTENANCE LIGHT ILLUMINATED, OIL LEVEL LOW. ACFT GROUNDED. PERFORMED APU OIL LEVEL INSPECTION FOUND, APU OIL NEAR FULL. REMOVED POWER FROM ECU, RESET BITE SHOWS NO FAULTS, OIL QTY FULL INTERMITTENT FAULT. OK FOR SERVICE.

Part: SERVO — MALFUNCTIONED (AUTOTHROTTLE) · airframe 1,676 hrs · 550 cycles

AUTO THROTTLE WILL NOT ARM. ACFT GROUNDED. VERIFIED ASM-1 FAULTS ON A/T FLT FAULT HISTORY. REMOVED & REPLACED ASM -1 REF MM 22-31-91, ASM-1. OPS NORMAL REF SAME MM AND SERVO MOTOR TEST.

Part: WARNING MESSAGE — FALSE ACTIVATION (WX RADAR SYS) · airframe 1,523 hrs · 501 cycles

ON APPROACH PWS AND WEATHER RADAR FAIL LIGHTS ILLUMINATED. ACFT GROUNDED. NO HISTORY OF FAULT LAST 30 DAYS. PERFORMED WEATHER RADAR SYS BITE PROCEDURE REF FIM 34-43 TASK 801 NO FAULTS. GROUND FUNCTIONAL TEST OF WX RADAR/PWS PASSED NO FAULTS.

Part: CONTROL VALVE — INOPERATIVE (LT A/C PACK) · airframe 802 hrs · 262 cycles

LEFT PACK LT OVERHEAD, WOULD NOT RESET OVHD IAW QRH. IT DID RESET WITH MASTER CAUTION FWD PANEL BUT COMES BACK ON RECALL. ACFT GROUNDED. VERIFIED FAULT, NR 1 CONTROLLER LOGGED THIS PACK TCV. PERFORMED FIM 21-62 TASK 830. REPLACED LT PACK V139 TCV REF MM 21-51-10. GROUND VERIFICATION TESTS GOOD.

Part: AUTOTHROTTLE SYS — FAILED · airframe 642 hrs · 206 cycles

AUTOTHROTTLES DISCONNECTED AND WILL NOT STAY ENGAGED. ALL CIRCUIT BREAKERS ENGAGED. AP NR 2 SELECTED, F/O MASTER. ACFT GROUNDED. A/T BITE FLIGHT FAULT SHOWS SEVERAL FLT WITH ASM NR 1 FAULT. DURING SERVO TEST ASM NR 2 LIMIT FAILED. REPLACED ASM NR 1 IAW MM 22-31-91-400-801. REPLACED ASM NR 2 REF MM 22-31-91-400-801. PERFORMED AUTOTHROTTLE TEST, PASSED.

Part: FMC — FAILED (EE BAY) · airframe 610 hrs · 199 cycles

IN CRUISE HAD DUAL FMC FAILURE, LEFT VTK AND MAP FLAGS. FOLLOWED QRH 11.30 RESTORED DUAL FMC OPERATION WITH FMC SWITCH BOTH ON R. FMC L BEARING AND DISTANCE INFORMATION DID NOT RESTORE. ACFT GROUNDED. RESET BOTH FMC IAW FIM 34-61, TASK 807. FMC-RT FAULT, RIGHT FMC LAST LEG AND GROUND FAULT IAW FIM 34-61, TASK 801. NO FAULTS LT FMC. REPLACED RIGHT FMC COMPUTER, REF MM 34-61-02 LOADED ALL REQUIRED SW INTO THE NEW FMC COMPUTER. OPS CK NORMAL, REF MM 34-61-00.

Part: WARNING LIGHT — FALSE ACTIVATION (APU) · airframe 520 hrs · 171 cycles

BLUE MAINTENANCE LIGHT ILLUMINATED AFTER APU START. ACFT GROUNDED. CDU SHOWS NO FAULTS OR FAULT HISTORY. OIL QTY = FULL. APU HAS NO HISTORY FOR THIRTY DAYS. UPON 2ND START APU OPS NORMAL WITH NO MAINT LIGHT ON.

Part: AUTOTHROTTLE SYS — INOPERATIVE · airframe 482 hrs · 157 cycles

AUTOTHROTTLES INOPERATIVE. ACFT GROUNDED. ON GROUND VERIFICATION DUPLICATED ASM NR 1 FAULT ON CURRENT STATUS CK. REPLACED NR 1 ASM REF MM22-31-91, OPS CHECKED NORMAL.

Part: AUTOTHROTTLE SYS — MALFUNCTIONED · airframe 392 hrs · 132 cycles

AUTOTHROTTLE INOPERATIVE. ACFT GROUNDED. ACCOMPLISHED AUTOTHROTTLE OPS TEST SYS TEST AND DFCS BITE 32. ALL TESTS PASSED.

Part: WARNING LIGHT — ACTIVATED (FMC) · airframe 334 hrs · 115 cycles

FMC DISAGREE MESSAGE SHORTLY AFTER PUSH. ACFT GROUNDED. PERFORMED THE FMC DISAGREE PROCEDURE IN THE QRH. PROBLEM SOLVED.

Part: WARNING MESSAGE — FALSE INDICATION (APU) · airframe 151 hrs · 35 cycles

APU MAINT LIGHT ILLUMINATED ON APU START. ACFT GROUNDED. PERFORMED APU BITE PROCEDURE. REF FIM 49-60 TASK 801. FOUND MX MESSAGE 49-91227. PERFORMED FIM 49-90, TASK 804, FAULT ISOLATION, STEP E. NO MX MESSAGE ON CURRENT STATUS PAGE. DETERMINED TO BE AN INTERMITTENT FAULT.

Part: LAMP — INOPERATIVE (EMERGENCY LIGHT) · airframe 15 hrs · 11 cycles

R-2 DOOR EMERGENCY EXIT LIGHT INOPERATIVE ON EXTERIOR OF FUSELAGE. ACFT GROUNDED. REPLACED LAMPS OPS CHECKED GOOD IAW MM 33-51-04.