N919AK

Part: POWER SUPPLY — INOPERATIVE (CABIN) · airframe 10,147 hrs · 3,065 cycles

EMERGENCY BATTERY PACK POWER SUPPLY M1673 FAILS CAPACITY CHECK. GROUNDED - YES. REMOVED, REPLACED AND PERFORMED INSTALLATION TEST OF EMERGENCY BATTERY PACK POWER SUPPLY M1673 IAW-MAX9 AMM33-51-06-960-803, TEST GOOD.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 9,573 hrs · 2,908 cycles

WHILE PERFORMING TC 31-005-00 SCHEDULED MTX TASK DISPLAYFOUND ENG 1 EEC C2 , AND ENG 2 EEC CE SCHEDULED MTX TASK. GROUNDED - YES. ON DEFERRAL.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 9,554 hrs · 2,902 cycles

IN CRUISE RIGHT SIDE WINDOW OVERHEAT LIGHT. RAN QRH. AFTER 5 MINUTE COOL DOWN TURNED SWITCH ON AND OVERHEAT LIGHT REMAINED. SWITCH TURNED OFF PER QRH. GROUNDED - YES. (RESOLVED ON W/O: 1976595 TASKCARD: N/R-00002 ) PERFORMED BITE TEST OF WHCU 1 & 2 REF AMM 30-41-11. NO DEFECTS NOTED. THIS CLEARS MEL 30-41-01B. C/N 05064919 REMOVED. SEAMC TODD NOTIFIED.

Part: VALVE — FAULTY (#2 ENGINE) · airframe 9,527 hrs · 2,897 cycles

FOLLOW-UP TO REPORT OF #2(RH) BLEED LIGHT WITH FAULT 36-00161(RT BLEED OVER PSI SHUTDOWN) ----(#PRI1)ETOPS SIGNIFICANT SYSTEM----. GROUNDED - YES. (RESOLVED ON W/O: 1976595 TASKCARD: N/R-00001 ) REMOVED AND REPLACED #2 ENG. HPSOV IN REF TO AMM 36-11-07. OPS TEST GOOD AND NO LEAKS NOTED. THIS CLOSES TSR715197.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 9,478 hrs · 2,879 cycles

RIGHT SIDE BLEED LIGHT CAME ON THRU 4000 AGL ON APPROACH, TRIP RESET ON GROUND, LIGHT EXTINGUISHED. GROUNDED - YES. FOUND FAULT CODE 36130142 MAINT MESSAGE 36-00161 (RIGHT BLEED AIR SYSTEM OVER-PRESSURE SHUTDOWN HAS OCCURRED. PERFORMED IFIM TASK 36-00-00-810-839 RIGHT BLEED SYSTEM RESET, NO CURRENT FAULT.

Part: CONTROLLER — FAULTY (E/E RACK E3-3) · airframe 9,442 hrs · 2,868 cycles

AFTER STARTING ENGINE #2, THE #2 BLEED ANNUNCIATOR ILLUMINATED. WENT THROUGH QRH AND ANNUNCIATOR REMAINED ON. GROUNDED - YES. MSG 36-11051 ACCOMP B737-9 IFIM 36-11-00-810-805 MESSAGE DIDN'T CLEAR. CYCLE PRSOV VALVE MANUALLY WATER DRIPPING OUT OF VALVE. REMOVED AND REPLACED #2 ENG PRSOV IAW B737-9 AMM 36-11-04-400-801 STEP 3.A THRU H AND SUBTASK 36-11-04-860-036 STEP 2,3 AND 4 G. PERFORMED ENG DRY RUN AND IDLE RUN REF AMM 71-00-00. #2 ENG BLEED ANNUNCIATOR RETURNED. SWAPED L/H AND R/H IASC'S, FAULT FOLLOWS, RETURNED TO NORMAL LOCATION AND REPLACED THE R/H IASC, OPS CHECK GOOD, FAULT NO LONGER PRESENT. REF AMM 21-61-22/401. OPS CHECKS PASS.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 8,817 hrs · 2,686 cycles

APU FAULT LIGHT ON START UP. GROUNDED - YES. ACCOMPLISHED IFIM 31-00-00-810-803. FOUND RECENT FAULT 49-41012. STARTED APU WITH NO FAULT LIGHT OBSERVED. ACCOMPLISHED BITE CHECK FOR CURRENT FAULTS "NONE ACTIVE".

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 8,515 hrs · 2,588 cycles

CAPT LEFT FMC FAILURE, ACCOMPLISHED FMC FAIL CHECKLIST, NO VTK ONLY MAP. GROUNDED - YES. PERFORMED IFIM TASK 34-61-00-810-846, INTERMITANT FAULT, OPS CHECK NORMAL.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 8,446 hrs · 2,570 cycles

CROSSFEED VALVE CHECK FAILED. CROSSFEED VALVE OPEN REMAINS BRIGHT BLUE. GROUNDED - YES. TROUBLE SHOT PER B737-9 IFIM 28-22-00 VALVE OPEN LIGHT OPERATES CORRECTLY INTERMITTENT FAULT.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 8,176 hrs · 2,498 cycles

WHILE ACCOMPLISHING T/C 05-020-01 DISCOVERED MESSAGE ENG 1 EEC C2. GROUNDED - YES. ON DEFERRAL.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 8,176 hrs · 2,498 cycles

WHILE ACCOMPLISHING T/C 05-020-01 DISCOVERED MESSAGE ENG 2 EEC C2. GROUNDED - YES. ON DEFERRAL.

Part: ELEMENT — CLOGGED (APU) · airframe 7,874 hrs · 2,409 cycles

WHILE PERFORMING ASA TSR714484 FOUND APU DIFF PRESS/ INDICATOR BUTTON POPPED. GROUNDED - YES. REPLACED LUBE FILTER ELEMENT AND APU OIL FILTER INDICATOR REF B737-9 AMM 49-91-12 AND AMM 49-91-13 LEAK CHECK GOOD, NO FAULTS NOTED DURING GROUND VERIFICATION.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 7,344 hrs · 2,258 cycles

RADAR IN AUTO MODE CAPTAIN SIDE SHOWS RETURN AT 60 MILES IN CLEAR CONDITIONS FO SIDE SHOWS NO RETURN. IN MANUAL MODE RADAR WORKS NORMAL. GROUNDED - YES. CHECKED WIRING AND FOUND OPEN WIRE BETWEEN CONNECTOR D13757D PIN B11 ON DPC-1 AND CONNECTOR D40149J ON E3-1. CONTINUED TROUBLESHOOTING & FOUND DISCONNECTED TERMINAL OF WIRE W0311-2145B-24 AT TERMINAL BLOCK TB3101 POSITION B57.WIRE TERMINAL LOCKED AND SECURED AT TB3101 POS B57 REF B737-9 WDM 34-41-11.OPERATION TEST AND WXR SYSTEM TEST DONE AND FOUND GOOD REF B737-9 AMM34-41-00/201.

Part: CHARGER — INOPERATIVE (E/E BAY, E3-3) · airframe 7,141 hrs · 2,201 cycles

ELEC LIGHT ON APU PANEL ILLUMINATED ON GROUND AT THE GATE. GROUNDED - YES. REPLACED AUX BAT CHARGER, REF B737-9 AMM 24-31-31.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 7,049 hrs · 2,172 cycles

RIGHT SIDE WINDOW "OVERHEAT" LIGHT ILLUMINATED ON LANDING. GROUNDED - YES. PERFORMED WINDOW HEAT SYSTEM OPERATIONAL TEST IAW B737-9 AMM 30-41-00-710-801.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 6,808 hrs · 2,103 cycles

LEFT FMC FAILED FOR APPROXIMATELY 20 SECONDS, LEFT FMC RESTORED ITSELF PRIOR TO RUNNING QRH. GROUNDED - YES. ACCOMPLISHED FMC OPS TEST REF B737-9 AMM 34-61-00 OPS NML, NO HISTORY PAST 30 DAYS.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 6,791 hrs · 2,095 cycles

AFTER LANDING FO SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED B737-9 IFIM TASK 30-41-00-810-831. F/O'S SIDE WINDOW OPS CK GD REF B737-9 AMM TASK 30-41-00-710-801. WAS AN INTERMITTENT FAULT. OKAY FOR SVC.

Part: IGNITER — INOPERATIVE (NR 1 ENGINE) · airframe 6,360 hrs · 1,977 cycles

ON START, ENGINE #1 RIGHT IGNITION SELECTED NO START ON START LEVER MOVED TO "IDLE". GROUNDED - YES. REVERSED MEL 74-00-01C SP#1. ACCOMPLISHED IFIM G74-00-00-810-840 STEP C.(3).(C). NO FAULTS FOUND. RECOMMEND REPLACING RIGHT IGNITER PLUG. OPENED, COLLARD, RESET 3 C/B'S. R/R #1 RIGHT IGNITOR PLUG REF B737-9 AMM 74-21-02. PERFORMED OPS CHECK REF AMM 71-00-00-800. OPS CHECK GOOD. PLACARDS REMOVED. THIS CLEARS MEL 74-00-01C. SEAMC WILL NOTIFIED.

Part: DOOR — STIFF (UNKNOWN) · airframe 6,121 hrs · 1,904 cycles

L1 DOOR, GATE AGENT REPORTED AS DIFIICULT TO OPEN. GROUNDED - YES. INSPECTED DOOR L1, DOOR OPERATES NORMAL, NO DEFECTS NOTED.

Part: IGNITER — FAULTED (NR 2 ENGINE) · airframe 6,043 hrs · 1,879 cycles

DURING CROSS-BLEED START ON ENGINE #2 NO FUEL FLOW ONCE THE START LEVEL WAS ADVANCED TO IDLE. GROUNDED - YES. REMOVED AND REPLACED RIGHT IGNITER PLUG REF B737-9 AMM 74-21-02.

Part: GENERATOR — FAULTED (APU) · airframe 5,980 hrs · 1,861 cycles

AT APU START ATTEMPT ON TAXI INTO GATE THE APU AMBER MAINT OVERHEAD LIGHTS ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED APU STARTER-GENERATOR IAW B737-9 AMM 49-41-21. PERFORMED B747-9 IFIM 49-40-00-810-806 "APU "LIMITED RESET" FUNCTION, OMF SHOWED "NOT ACTIVE" FOR APU FAULTS. RAN APU MULTIPLE TIMES WITH NO FAULTS. ORIG SUBMISSION DATE: 12/22/2022

Part: FMC — FAULTED (DUAL) · airframe 5,872 hrs · 1,825 cycles

AT CRUISE, HAD A MOMENTARY DUAL FMC FAILURE, A/P DISCONNECTED WITHOUT AURAL WARNING. FMC 'S RESTORED IN LESS THAN 10 SECONDS. GROUNDED - YES. NO FAULTS AT THIS TIME, ACCOMPLISHED B737-9 IFIM TASK 31-65-00-810-A02. BITE TESTS GOOD, PREVIOUS FLT AFFECT FAULTS NOT ACTIVE. OK FOR SERVICE PER B737-9 AMM REF 22-11-00-740-002.

Part: SATCOM — UNKNOWN · airframe 5,701 hrs · 1,772 cycles

BOTH SATCOM RECEIVERS HAD A VERY LOW VOLUME, WHICH MADE COMMUNICATION RECEPTION IMPOSSIBLE, FMC MENU OPS CHECK OK. GROUNDED - YES. PERFORMED SAT #1 & SAT #2 VOICE COMMUNICATION TEST WITH ALASKA DISPATCH NORMAL B737-9 AMM 23-15-00-710-801.

Part: EXCITER — INOPERATIVE (NR 2 ENGINE) · airframe 5,596 hrs · 1,739 cycles

AMBER MAINT LIGHT ON OVERHEAD PANEL ILLUMINATED ON LANDING. GROUNDED - YES. MAINT LIGHT ILLUMINATED DUE TO ENG 2 IGNITION FAULTS. REMOVED & REPLACED RIGHT EXCITER IAW B737-9 AMM 74-11-01. PERFORMED POWER PLANT TESTS 18 & 19 IAW AMM 71-00-00. ALL TESTS GOOD. NO MSGS DISPLAYED. (REF LOGPAGE 60411329)

Part: EXCITER — INOPERATIVE (NR 2 ENGINE) · airframe 5,586 hrs · 1,737 cycles

#2 ENGINE FAILED TO START AFTER PUSHBACK. START LEVER WAS IN IDLE FOR 15 SECONDS WITH NO EGT RISE. GROUNDED - YES. REMOVED & REPLACED RIGHT EXCITER IAW B737-9 AMM 74-11-01. PERFORMED POWER PLANT TESTS 18 &19 IAW AMM 71-00-00. ALL TESTS GOOD. NO MSGS DISPLAYED.

Part: NOZZLE — COKED (NR 2 ENGINE) · airframe 5,581 hrs · 1,736 cycles

GE DIAGNOSTICS REPORTS #2 ENGINE TREND DATA SHOWS EXCESS COKING OF THE FUEL NOZZLE MAIN ORIFICES. (FULL SET FUEL NOZZLE REPLACEMENT 737MAX T/C 73-ASA-02) NO EXTENSION ALLOWED 225 CYCLES OR 45 DAYS, WHICHEVER COMES FIRST. CNR 20220925083. GROUNDED - YES. FUEL NOZZLE SET REPLACED ON ASA T/C 73-ASA-02.

Part: ANTI-ICE VALVE — FAULTED (LEFT WING) · airframe 5,522 hrs · 1,722 cycles

WHEN WING ANTI-ICE TURNED ON, L VALVE LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED L/H WING ANTI-ICE VALVE REF B737-9 AMM 30-11-11.

Part: FMC — MALFUNCTIONED · airframe 5,455 hrs · 1,707 cycles

VTK DISPLAYED CN CAPTAINS NAV DISPLAY FOR 10 SECONDS FMC DISAPPEARED FOR A COUPLE OF SECONDS ON F/O FMC. NO OTHER SYSTEM CHANGES. ALL SYSTEMS NORMAL. GROUNDED - YES. PERFORMED B737-9 IFIM 34-61-00-810-846. CYCLED BOTH FMCS C/BS NO DEFECTS NOTED.

Part: EXCITER — FAULTY (#2 ENGINE) · airframe 5,461 hrs · 1,708 cycles

STARTING #2 ENG, MOTORED FOR A FEW SECONDS, N2 BEGAN TO RISE AT 36 SECONDS, FUEL WAS INTRODUCED AND N2 HUNG AROUND 32.0 (STAYED AT 32.0), STOPPED START - REPEATED START PROCEDURE WITH SAME RESULT. GROUNDED - YES. REMOVED AND REPLACED R EXCITER REF B737-9 AMM 74-11-01.

Part: ANTI-ICE VALVE — FAULTY (LEFT WING) · airframe 5,179 hrs · 1,622 cycles

DURING DESCENT "L-VALVE" LIGHT WHILE USING WING ANTI ICE. GROUNDED - YES. REMOVED & REPLACED LH WING THERMAL ANTI ICE VALVE IAW B737-9 AMM 30-11-11.

Part: FMC — FAULTED (UNKNOWN) · airframe 5,157 hrs · 1,617 cycles

CAPTAIN'S FMC INOP. GROUNDED - YES. L/H FMC SHOWS DISAGREE ON BITE TEST. RE-SYNCED L/H & R/H FMC'S REF B737-9 FIM TASK 34-61-00-810-918 NO CURRENT FAULTS ON OMF EXISTING FAULTS. NORMAL OPS OF FMC'S RESTORED.

Part: BLEED VALVE — INOPERATIVE (PNEUMATIC SYS) · airframe 4,916 hrs · 1,543 cycles

WHILE PERFORMING TASK CARD 31-005-00, FOUND SCHEDULED MAINTENANCE TASK MESSAGE "BLEED FAN AIR MODULATION VALVE (FAMV) ROTARY VARIABLE DIFFERENTIAL TRANSFORMER (RVDT) R". GROUNDED - YES. REMOVED AND REPLACED FAMV ON #2 ENGINE IAW B737-9 AMM 36-12-03. (ASA TSR713106)

Part: SHUTOFF VALVE — DAMAGED (#1 ENGINE) · airframe 4,622 hrs · 1,448 cycles

WHILE LOCKING CLOSED THE HPSOV BOLT BROKE OFF. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE HPSOV REF B737-9 AMM 36-11-07.

Part: OVERHEAT — WARNING LIGHT (UNKNOWN) · airframe 4,511 hrs · 1,408 cycles

R FWD WINDOW OVERHEAT ILLUMINATED DURING TAXI. GROUNDED - YES. ACCOMPLISHED QRH ITEMS AND OVERHEAT HEAT LIGHT EXTINGUISHED. CONTINUED NORMAL OPERATIONS.

Part: OVERHEAT — ILLUMINATED (UNKNOWN) · airframe 4,444 hrs · 1,384 cycles

THE WINDOW HEAT RIGHT SIDE SIDE ON LIGHT IS NOT ON WITH SWITCH ON. GROUNDED - YES. TURNED ON R/H SIDE WINDOW SWITCH AND 'ON' LIGHT OPERATES NORMALLY. ACCOMPLISHED WINDOW HEAT CONTROL UNIT SYS TEST AND BITE REF B737-9 AMM 30-41-11-710-801, NO DEFECTS NOTED.

Part: DATALINK — FAILED (UNKNOWN) · airframe 3,683 hrs · 1,152 cycles

APPROACHING THE EEP APPROXIMATELY 1 HR INTO FLIGHT THE HF + VHF DATA LINK BOTH FAILED. NO COMM MESSAGE REMAINED UNTIL APPROXIMATELY 180NM FROM COAST LINE. GROUNDED - YES. ON DEFERRAL. PERFORMED VHF SYSTEM TEST IAW B737-9 AMM 23-12-00-730-801, CHECKS GOOD. HF SYSTEM TEST IAW AMM 23-11-00-730-801, CHECKS GOOD. ACARS SYSTEM TEST IAW AMM 23-27-00-700-802, CHECKS GOOD. VHF AND SATCOM LINK TEST SUCCESSFUL. NO MAINT MSG ON STATUS PAGE, NOR IN EXISTING OR FAULT HISTORY THROUGH OBMF. COMPLIED WITH INSTALLATION OF NEW CMU CORE 16 SOFTWARE PER ASA TASK CARD NUMBER MULTI-23EO-24118-2. ACCOMPLISHED CDPLC FUNCTION TEST 34-61-00-720-899.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 3,091 hrs · 1,010 cycles

SINGLE CHANNEL SPEED TRIM FALIURE (EXTINGUISHES ON MASTER CAUTION RESET). GROUNDED - YES. RAN B737-9 FIM TASK 22-11-00-810 LOGGED FAULT MSG 22-11176 RAN IFIM TASK 22-11-00-810-933 SPEED TRIM TESTS PASSED PER SAME REF OK FOR SERVICE.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 2,858 hrs · 946 cycles

APPROXIMATLEY 1.5 HOURS AFTER TAKEOFF RECEIVED "NO COMM " MESSAGE DISLAYED UNABLE TO SEND/RECEIVE ACARS DATA THROUGH SATQRHF. ACARS WORKS FINE ON VHF. GROUNDED - YES. VERIFIED ACARS DATA THROUGH SATCOM OPERATES PROPERLY ON GROUND. PERFORMED OPS TEST OF SATCOM SYSTEM. OPS TEST GOOD.REF B737-9 AMM AMM 23-15-00-710-801.PERFORMED SATCOM LINK TEST. LINK TEST SUCCESSFUL. REF AMM 23-27-00-700-802.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 2,635 hrs · 877 cycles

WXR FAIL. GROUNDED - YES. ACCOMPLISHED WXR OPERATIONAL TEST REF B737-9 AMM 34-41-00-710-801 GROUND VERIFICATION TEST PASS.

Part: MODULATING VALVE — INOPERATIVE (#1 ENGINE) · airframe 2,495 hrs · 838 cycles

MAINT ANNUNCIATOR ILLUMINATED ON LANDING. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE FAN AIR MODULATING VALVE IAW B737-9 AMM 36-12-03. 4 BREAKERS PULLED AND RESET. PERFORMED LRU REPLACEMENT TEST IAW AMM 36-12-00-720-801, & 46-13-02-710-801.

Part: NONE — INOPERATIVE (VERTICAL FIN) · airframe 2,110 hrs · 733 cycles

HF NO 1 APPEARS TO BE UNUSABLE/INOPERATIVE RECEPTION IS UNREADABLE AND TRANSMISSIONS GO UNANSWERED ON ALL FREQUENCIES. GROUNDED - YES. PERFORMED BITE TEST ON HF 1 AND HF2, HF 1 FAIL, SWAPPED, HF1 AND HF2 TO TS, HF1 FAILS. SWAPPED HF1 AND HF2 TO ORIGINAL POSITION BITE TEST GOOD ON BOTH SYSTEMS, NO TRANSMISSION STILL AND RECEPTION GARBLED. R&R HF1 COUPLER IAW B737-9 AMM 23-11-61/401. HF1 AND HF2 TRANSMISSION AND RECEIVER TEST GOOD.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 2,110 hrs · 733 cycles

HF NO 2 APPEARS TO BE INOPERATIVE/UNUSABLE. RECEPTIONS ARE UNREADABLE AND TRANSMISSIONS GO UNANSWERED ON ALL FREQUENCIES. GROUNDED - YES. PERFORMED BITE TEST ON HF 1 AND HF2, HF 1 FAIL, SWAPPED, HF1 AND HF2 TO TS, HF1 FAILS. SWAPPED HF1 AND HF2 TO ORIGINAL POSITION BITE TEST GOOD ON BOTH SYSTEMS. REF LOGPAGE 60243692 FOR RESOLUTION OF HF1 ISSUE.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 1,958 hrs · 687 cycles

APU WOULD NOT START AND THE FAULT LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED ON BOARD APU MAINT BITE CHECK NO FAULT NOTED NO RECENT HISTORY (TRAX). INTERROGATED FAULT HISTORY FOUND MSG 49-41012 NOT ACTIVE AND MSG 49-41254 NOT ACTIVE BOTH FAULTS INDICATE INTERMITTENT. REF B737-9 IFIM49-40-00-818. APU OPS NORMAL.

Part: SHUTOFF VALVE — INOPERATIVE (#1 ENGINE) · airframe 1,004 hrs · 451 cycles

DURING HPSOV LOCKOUT PROCEDURE (ENGINE NO 1 COMPRESSOR WASH) LOCKBOLT HELICOIL BACKED OUT. GROUNDED - YES. REPLACED NO 1 ENGINE HPSOV REF B737-9 AMM 36-11-07. LEAK TEST GOOD. LRU REPLACEMENT TESTS GOOD.

Part: DISPLAY — FAULTED (COCKPIT) · airframe 797 hrs · 376 cycles

DURING DESCENT WIND FORECAST UPLOAD, BOTH CAPT & FO ND'S WENT BLANK VDK ANNUNCIATED ON CAPT. ND BOTH MCDU'S WENT BLANK. AFTER APPROXIMATELY 30 SECONDS EVERYTHING RESTORED TO NORMAL. GROUNDED - YES. FOUND MAINT MSG 34-69001, UNDER GRND FLT DECK EFFECTS, NO MAINT LIGHT. ACCOMP FMC OP'S CK, REF B737-9 AMM 34-61-00-710-801 & MAX DISPLAY OP'S CK REF AMM 31-65-11-400-801 'H', NO DEFECTS FOUND. A/C OK FOR SVC.

Part: SENSOR — FAULTED (COCKPIT WINDOW) · airframe 709 hrs · 337 cycles

LEFT SIDE WINDSHIELD HAD OVERHEAT, TURNED OFF PER QRH FOR 5 MINS LIGHT DID NOT COME BACK ON WHEN TURNED BACK ON. GROUNDED - YES. PERFORMED LEFT SIDE WINDOW WHCU OPS TESTS. NO FAULTS FOUND. WHCU BITE SHOWS #1 SENSOR FAIL SEVERAL TIMES. REF B737-9 AMM 30-41-11. DUE TO HISTORY SWAPPED TO SPARE SENSOR PER AMM 30-41-00-420-801. OPENED /CLOSED 1 CB. PERFORMED WHCU OPS TEST. NO FAULTS FOUND. REF B737-9 WDM 30-41-12 PG 3.

Part: WARNING MESSAGE — ILLUMINATED (WINDOW OVERHEAT) · airframe 652 hrs · 314 cycles

WINDOW OVERHEAT ON DESCENT THROUGH 17000 TAT +14. GROUNDED - YES. RAN QRH AND LIGHT STAYED EXTINGUISHED AFTER COOLING FOR 2 MINUTES.

Part: WARNING LIGHT — FALSE ACTIVATION (LT C/P WINDOW) · airframe 481 hrs · 233 cycles

LEFT WINDOW OVHT LIGHT ON. GROUNDED - YES. PERF QRH LIGHT WENT OUT AFTER 4.5 MI WHEN SWITCH TURNED BACK ON.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 450 hrs · 218 cycles

WHILE PERFORMING T/C 31-005-00 FOUND FAULT "BLEED PM SENSOR 1R" IN SCHEDULED MAINTENACE TASK MESSAGES. GROUNDED - YES. FOUND MAINTENACE MESSAGE 36-21021 IN PRESENT LEG FAULTS & EXISTING FAULTS. DEFERRED PER T/C 31-005-00. PLT DEFERRAL FOR 2,950 FLIGHT HOURS. FAULT SHOWED IN SCHEDULED MAINTENANCE TASK MESSAGES. FAULT NO LONGER PRESENT. PERFORMED ELECTRICAL LRU - REPLACEMENT TEST PER B737-9 AMM 36-00-00-710-801AND B737-9 IFIM TASK 36-21-00-810-804. NO FAULTS FOUND, TEST PASSED.

Part: SENSOR — FAULTED (BLEED PM) · airframe 347 hrs · 170 cycles

WHILE PERFORMING T/C 31-005-00 " SCHEDULED MAINTENANCE TASK DISPLAY SYSTEM "FOUND FAULT" BLEED PM SENSOR R1" IN SCHEDULED MAINTENANCE TASK MESSAGES. GROUNDED - YES. FOUND MAINTENANCE MESSAGE 36-21021 UNDER EXISTING FAULTS. FOLLOWED B737-9 IFIM TASK 36-21-00-810-804. FAULT CLEARED DURING INITIAL EVALUATION. AIRCRAFT OK FOR SERVICE AT THIS TIME.

Part: AUTOTHROTTLE SYS — MALFUNCTIONED · airframe 120 hrs · 64 cycles

ON TAXI OUT A/T WILL NOT ARM. GROUNDED - YES. RESET C/B D1 ON PANEL P18-1 REF B737-9 AMM 20-60-01-860-801. ACCOMPLISHED AUTOTHROTTLE SYS OPS TEST PER AMM 22-31-00-710-801, TEST PASSED NO FAULTS SHOWS ON THE CDU, NO ACTIVE MAINT LIGHT.