N550TZ

Part: BATTERY PACK — UNSERVICEABLE (EMERGENCY LIGHTS)

EMERGENCY EXIT SIGN AT MID AFT OVERHEAD RAFT, RT EMERGENCY DOOR OVERHEAD EXIT SIGN, AND LT EMERGENCY DOOR AFT EXIT SIGN INOPERATIVE. REMOVED AND REPLACED BATTERY PACK GROUND CKD NORMAL. (K)

Part: BATTERY — UNSERVICEABLE (EMERGENCY LIGHTS)

EGRESS LIGHTS INOPERATIVE AT LT EMERGENCY EXIT JUST AFT OF WING-LIGHTS INOP ARE SIDEWALL AFT, SLIDE LIGHT ON FUSELAGE BELLY, WHITE LIGHT BETWEEN LAVS, JUST FWD OF DOOR AND CROWN EXIT NEXT TO DOOR. REMOVED AND REPLACED BATTERY PACK GROUND CKD NORMAL. (K)

Part: DISPLAY — UNSERVICEABLE (FMC)

IAW CREW DEBRIEF F/O, SFMC CDU INTERMITTENTLY BLANKS OUT, SELECT SW. TO ALTERNATE, NO HELP. REMOVED AND REPLACED FMC CDU IAW AMM 344-62-02. OPS CHECKED GOOD. (K)

Part: CHARGER — UNSERVICEABLE (BATTERY)

EICAS MESSAGE MAIN BATTERY CHARGER. REMOVED AND REPLACED MAIN BATTERY CHARGER IAW MM 24-31-02-4. TESTED GOOD. (K)

Part: IDG — MALFUNCTIONED (LT ENGINE)

L ENG GENERATOR DRIVE LIGHT DOES NOT ILLUMINATED AT SHUTDOWN. REMOVED AND REPLACED LT ENGINE IDG IAW M57-24-01, OPS CK GOOD, NO LEAKS NOTED. (K)

Part: APU — UNSERVICEABLE

APU ON START OIL QTY FLLUXUATION, CHIP DETECTOR HAS DEBRIS AND OIL DRAINS FROM CHECK VALVE TO ZERO QTY. REPLACED APU IAW M57-49-02. APU OPS AND LEAK CHECKED GOOD. (K)

Part: RELAY — FAILED (APU)

APU FAILED TO START ON THE GROUND. REMOVED AND REPLACED APU RELAY IAW FIMM 49-11-00, OPS CHECK NORMAL. (K)

Part: VALVE — LOCKED (LT WING)

WITH WING ANTI-ICE SWT SELECTED ON EICAS MSG DISPLAYED REPECTIVE VALVE LIGHTS ILLUM. FOUND BOTH RT AND LT WING TAI VALVES IN MANUAL LOCKED POSITION, REOPENED BOTH VALVES, PERFORMED ADJ AND TEST IAW 30-11-00-5. OPS NORMAL. (K)

Part: SWITCH — MALFUNCTIONED (FUEL BOOST)

DURING CLIMB, RT AFT FUEL BOOST PUMP SWITCH CAME UNLATCHED. FUEL PUMP OPS OK. SWITCH WILL NOT STAY IN HOUSING CONTINUOUSLY (LATCHED IN). REMOVED AND REPLACED RT AFT FUEL BOOST PUMP SWITCH OPS CHECK, OK. (K)

Part: FLOOR PANEL — CORRODED (BS 1470-1510)

AFT CARGO COMPARTMENT FLOOR PANEL NR 161 AF AND STRAP HAS CORROSION NUMEROUS PLACES UPPER AND LOWER SURFACES STATION 1470 TO 1510 LBL 20 TO RBL 20. FAB NEW PANEL IAW 53-60-53 FIG 1. (M)

Part: PANEL — CORRODED (BS 1310-1410)

AFT CARGO PIT BILGE LT SIDE PANEL HAS CORROSION ON UPPER AND LOWER SURFACES FROM STATION 1310 TO 1410. REMOVED CORROSION SRM 51-10-00. FOUND OUT OF LIMITS PER SRM 53-60-53. REPAIRED PANEL SRM 51-70-11 FROM STATION 1410 TO 1360. REMOVED CORROSION FROM 1360 TO 1310 ORIG MATL .063 MAT REMOVED .005 WITHIN LIMITS PER SRM 53-60-53. TREATED PER SRM 51-00-00. (M)

Part: FLOOR PANEL — CORRODED (FS 1330-1470)

AFT CARGO COMPARTMENT FLOOR PANEL 153BF HAS CORROSION UPPER AND LOWER SURFACE. FABRICATED NEW PANEL IAW 53-60-53. (M)

Part: FLOOR PANEL — CORRODED (BS 1330-1470)

AFT CARGO COMPARTMENT FLOOR PANEL 161BF HAS CORROSION ON UPPER AND LOWER SURFACE NUMEROUS AREAS, STATION 1330 TO 1470 LBL 20 TO RBL 20. FABRICATED NEW PANEL 161BF IAW SRM 53-60-53 FIG 1 MATERIAL 2024 T-3 .071, TREATED 51-20-01 SRM. (M)

Part: FLOOR PANEL — CORRODED (BS 1470-1510)

AFT CARGO COMPT FLOOR PANEL NR 161AF AND STRAP HAS CORROSION ON NUMEROUS PLACES UPPER AND LOWER SURFACE, OFF A/C PART, STATION 1470 TO 1510 LBL 20 TO RBL 20. FABRICATED AFT CARGO COMPARTMENT FLOOR PANEL 161AF PER SRM 53-60-53 FIG 1 MATERIAL 2024 T-3 .071 ALODINE AND PRIME PER SRM 51-20-01. (M)

Part: FLOOR PANEL — CORRODED (FS 550-654)

FORWARD CARGO COMPARTMENT FLOOR PANEL 121 AFT LOWER SURFACE HAS CORROSION AROUND EDGES. FABRICATED NEW PANEL PER SRM 53-60-53. TREATED SRM 51-20-01. (M)

Part: PANEL — CORRODED (BS 1200-1330)

AFT CARGO COMPARTMENT PANEL NR 153AF HAS CORROSION ON UPPER AND LOWER SURFACE NUMEROUS AREAS AT STATION 1200 TO 1330 LBL 20 TO RBL 20. FABRICATED NEW FLOOR PANEL 153AF PER SRM 53-60-53 FIG 1 MATERIAL 2024 T3 .071. TREATED SRM 51-20-01. (M)

Part: UNKNOWN — UNKNOWN (AILERON CONTROL)

EO 757-27AD-3162 AILERON CONTROL, ADDITION OF LATERAL DAMPER TO THE FIRST OFFICERS AILERON CONTROL QUADRANT. COMPLIED WITH EO 757-27AD-3162. (M)

Part: LONGERON — CORRODED (FS 1330)

AFT CARGO PIT LONGERON CORRODED AT STATION 1330 LBL 2.9. REMOVED CORROSION MATERIAL LOSS .024, FOUND TO BE OUT OF LIMITS. REPAIRED IAW SRM 53-00-53. (M)

Part: LONGERON — CORRODED (BS 1330)

AFT CARGO PIT LONGERON HAS CORROSION STATION 1330 RBL 16.10. REMOVED CORROSION MATERIAL LOSS .026 OUT OF LIMITS REPAIRED IAW SRM 53-60-53, 53-00-53. (M)

Part: LONGERON — CORRODED (FS 1330)

AFT CARGO PIT CORROSION ON LONGERON AT STATION 1330 LBL 10.45. REMOVED CORROSION MATERIAL LOSS .030 OUT OF LIMITS. REPAIRED IAW SRM 53-30-53-1A. (M)

Part: LONGERON — CORRODED (BS 133) · corrosion level 2

AFT CARGO PIT LOWER BILGE CORROSION AT STA 1330, RBL 7.55 ON LONGERON. REMOVED CORROSION MATERIAL LOSS .027 OUT OF LIMITS. REPAIRED IAW SRM 53-60-53, 53-00-53. (K)

Part: SILL — CORRODED (BS 1380-1426) · corrosion level 2

AFT CARGO DOOR LOWER SILL HAS CORROSION FROM STA 1380, STA 1426 RBL 22. REPLACED Z CHANNEL IAW SRM 51-40-02-0G. (K)

Part: LONGERON — CORRODED (BS 1330)

AFT CARGO PIT LOWER BILGE LONGERON CORROSION STATION 1330 RBL 10.43. REMOVED 2 NUTPLATES BLENDED, CORROSION MATERIAL LOSS .020 FOUND TO BE OUT OF LIMITS. REPAIRED IAW 53-00-53, 53-60-53. (M)

Part: DRIVE UNIT — UNSERVICEABLE (RADAR)

REMOVED AND REPLACED RADAR DRIVE UNIT IAW CHAPTER 34. OPS CHECK GOOD. (K)

Part: DRIVE UNIT — INOPERATIVE (WX RADAR)

STATUS CODE (WXR SYS) DISPLAYED. REMOVED AND REPLACED WXR DRIVE UNIT IAW MM34-43-05, OPS CHECK NORMAL, MSG EXTINGUISHED, OK FOR SERVICE. (K)

Part: NONE — NONE (HF RADIO)

LT HF RADIO RECEIVER GARBLED AND UNREADABLE. PERFORMED ADJ AND TEST ON LT HF SYSTEM, CALLED SFO ON 8843 AND 5574 RECEIVED AND TRANSMITT 5X5, COULD NOT FAULT, OK FOR CONTINUED SERVICE. (K)

Part: GENERATOR — UNSERVICEABLE (LEFT)

ON ENG STARTUP (LEFT) GENERATOR DRIVE LIGHT COMES ON. REMOVED AND REPLACED NR 1 IDG IAW M-SHEET M57-24-01 AND AMM 24-11-01-4. OPS CHECK GOOD NO LEAKS NOTED. (K)

Part: APU — MALFUNCTIONED (APU BAY)

APU INOPERATIVE. PERFORMED BITE ON ECU, FOUND 2 ABORTED STARTS AND 1 DOOR SYSTEM FAULT. RAN APU SEVERAL TIMES APU RAN FINE NO FAULTS. (K)

Part: BOTTLE — UNSERVICEABLE (EVAC SLIDE)

RT EMERGENCY ESCAPE TEST LT IS ILLUMINATING (DIM) AT ALL TIMES. REPLACED RT EMER ESCAPE BOTTLE IAW AMM 25-65-02. CHECKS NORMAL. (K)

Part: ECU — FAILED (APU)

APU AUTO SHUTDOWN, SHOW REV FLOW LAST 3 SHUTDOWNS AND CODES 36 AND 43. REMOVED AND REPLACED APU ECU REF MM. OPS AND BITE CHECK GOOD. APU RUN NORMAL. (K)

Part: ENGINE — LEAKING (LEFT)

PERFORMED RTO AT 90 KTS DUE MODERATE SMOKE IN COCKPIT. CHANGED LT ENG DUE TO OIL SEEP IN COLD STREAM. (K)

Part: DISPLAY — UNKNOWN (WX RADAR)

WXR FAIL DISPLAYED ON HSI AND WXR TEST DISPLAYS WXR FAIL ANT. PERFORMED OPERATIONAL CHECK ON WXR RADAR SYSTEM CHECK GOOD IAW MM 34-43-00. (K)

Part: IDG — MALFUNCTIONED (NR 1)

EICAS MESSAGE (L GEN DRIVE) DISPLAYED. GEN DRIVE LIGHT ILLUMINATED. GEN DRIVE DISCONNECTED. REPLACED NR 1 ENG IDG IAW W/C M57-24-01. (K)

Part: SENSOR — FAULTY (APU)

APU AUTO SHUTDOWN WITH FAULT LIGHT ILLUMINATED IAW FIM 49-11-00 FIGURE 108, INSTALLED REPLACEMENT. LOAD COMPRESSOR INLET TEMP SENSOR IAW AMM 49-61-03, OPERATIONAL CHECK NORMAL. (K)

Part: ENGINE — MALFUNCTIONED (NR 2)

ON TAKEOFF EGT RAPIDLY ROSE BEYOND 855C HAD TO REDUCE POWER TO STAY WITHIN LIMITS ON CLIMB-OUT. CLIMB 2 SELECTED EGT 810C, N3 997 PERCENT COULD NOT HOLD MAX CONTINUOUS OR CLIMB POWER. (M)

Part: WARNING MESSAGE — ACTIVATED (COCKPIT)

RT HF DATALINK STATUS MSG DISPLAYED THE LT HF DATALINK WORKED OK. FOLLOWED FIM MM. NO FAULTS FOUND. (K)

Part: STARTER — UNSERVICEABLE (APU)

APU NO START, FAULT LIGHT ILLUMINATED. REMOVED AND REPLACED APU STARTER IAW AMM. (K)

Part: SWITCH — UNSERVICEABLE (APU)

APU FAULT LIGHT ILLUMINATED AND APU SHUTDOWN. PERFORMED BITE CHECK ON APU ECU AND READ (FILTER SW (GEN))LIGHT. IAW FIM, REMOVED AND REPLACED DELTA P SWITCH IAW MM. NO FAULTS NOTED. (K)

Part: CONTROL UNIT — MALFUNCTIONED (APU)

DURING WALK-AROUND, APU HAD AN AUTO-SHUTDOWN OCCURENCE. REMOVED AND REPLACED ECU FOR APU IAW AMM 49-61-05-2. OPS CHECK GOOD. (K)

Part: DETECTOR — INOPERATIVE (WARNING SYS)

STATUS MSG LT ENG OH LP 1. REMOVED AND REPLACED LOOP, LOOP 2 ASSY IAW AMM26-11-01. OPS CHECK GOOD. (K)

Part: WARNING MESSAGE — ACTIVATED (FMC)

LT FMC FAIL EICAS MESSAGE DISPLAYED. RESET BREAKER FOR LT FMC COMPUTER NO MSG DISPLAYED FMC CHKS NORMAL. (K)

Part: FLOOR PANEL — CRACKED (FS1377-1480)

AFT CARGO COMPT BETWEEN STA 1377 AND 1480 FLOOR PANEL HAS A CRACK. STOP DRILLED CRACK AND INSTALLED 2EA RIVETS ON FLOOR PANEL AT AFT CARGO BETWEEN STA 1377 AND 1480 IAW SRM. CRACK FOUND TO BE WITHIN LIMITS ACTUAL LENGTH 1 INCH. FILLED CRACK WITH SEALANT. (K)

Part: SKIN — CORRODED (FUSELAGE)

SURFACE CORROSION ON AC SKIN AT LOWER TCAS ANTENNA STA 450, RBL 2 AND RBL 4 AREA 2 INCHES X 4 INCHES APPROX. BLENDED SURFACE CORROSION ON SKIN DOUBLER LOWER TCAS ANTENNA STA 450, RBL 2 AND 4 MATERIAL REMOVED RANGED FROM .001 TO .003 MEASURES THICKNESS FOUND TO BE WITHIN LIMITS IAW SRM. TREATED AREA IAW SRM. (K)

Part: FLOOR SUPPORT — CORRODED (FUSELAGE)

AFT CARGO SIDEWALL FLOOR SUPPORT FROM STA 1480 TO 1540 LT SIDE IS CORRODED. REMOVED MINOR CORROSION ON SIDEWALL FLOOR SUPPORT STA 1480-1540, LT SRM. ORIGINAL THICKNESS .063 IAW SRM DETAIL VII INLINITS AFTER .005 REMOVAL OF MATERIAL DETAIL V TREATED AND PRIMED. (K)

Part: BRACKET — CORRODED (RADOME) · corrosion level 1

CORRODED ON RADOME UPPER BRACKET AT 12 OCLOCK POSITION ON INTERNAL SIDE AT AFT END STA 199, RBL 3 AREA .75 X .75. REMOVED CORROSION FROM RADOME BRACKET ORIGINAL THICK .075. MATERIAL REMOVED .003 FOUND TO BE WITHIN LIMITS SRM. TREATED AND PRIMED. (K)

Part: SKIN — CORRODED (FUSELAGE) · corrosion level 1

UPPER FUSELAGE HAS CORROSION AROUND FASTENER HOLES AT ATA ANRENNA LOCATION STA 537 AND LBL 5, APPROX .125 X .5 ON EACH HOLE. REMOVED CORROSION AT STA 537, LBL 5 IAW SRM. ORIGINAL MATERIAL THICKNESS .040 MATERIAL LOSS IS .001-.002 WITHIN LIMITS OK TO TREAT AREA, TREATED AREA. (K)

Part: POWER SUPPLY — INOPERATIVE (EMERGENCY LIGHT)

L4 DOOR EXTERIOR EMERGENCY LIGHT INOPERATIVE. REMOVED AND REPLACED L4 DOOR EMERGENCY LIGHT POWER SUPPLY REF BOEING 757 MM 33-51-07-2. PER FIM 33-51-00 BLOCK 20 REPLACED POWER SUPPLY. OPERATIONAL CHECK NORMAL. (M)

Part: TAPE — PEELING (RT ENGINE)

FOUND RT ENGINE SURGE +- 10 EPR, +-5N1, +-20 EGT AND RISING EGT DURING CRUISE AND DESCENT (EAI ON AND OFF). EECS TURNED OFF PER MAINTENANCE CONTROL RT ENGINE RETURN TO NORMAL. FOUND TAPE PEELED OFF OF MISSING PF RAKE, RETAPED REF AMM 77-11-04-2, OPS CHECK GOOD AT VARIOUS POWER SETTINGS. (M)

Part: PITOT HEAD — MISSING (PITOT/STATIC)

FOUND RT ENGINE EPR AND N1 FLUCTUATED SLIGHTLY AT THE TOP OF DESCENT. FOUND MISSING PF RAKE PITOT HEAD INBOARD SIDE PERFORMED TEMP REPAIR PER AMM 77-11-04-2. RAN ENGINE AT VARIOUS POWER SETTINGS NO FLUCTUATION NOTED AT THIS TIME. (M)

Part: WARNING LIGHT — ILLUMINATED (LT ENGINE)

LEFT ENGINE OH LP1 DISPLAYED AFTER TAKEOFF. (M)

Part: INDICATOR — MALFUNCTIONED (RT FUEL CELL)

FUEL TANK, RIGHT, QTY INDICATOR EICAS MSG FUEL QTY IND DISPLAYED. DEFERRED PER MEL 28-41-11 AUTH NR D28SE01-0103. (M)

Part: COMPUTER — MALFUNCTIONED (E/E BAY)

FUEL TANK AND TOTAL FUEL QTY INDICATORS BLANK, INTERMITTENT, EICAS MSG FUEL QTY IND DISPLAYED FUEL QTY TEST NOT CHECKED. T/S PER FIM 28-41-00 FIG 117. REMOVED AND REPLACED FQIS PROCESSOR. INSPECTED THE HI-Z LO-Z PLUG CONNECTION AT LEFT MAIN TANK RECEPT. OPS CHECK GOOD. NO FAULTS OR MSG'S. (M)

Part: SENSOR — INOPERATIVE (A/C BAY) · airframe 4,116 hrs · 1,546 cycles

FLIGHT NUMBER 533. DURING CRUISE, LT PACK OFF AND PACK TEMP DISPLAYED (EICAS) INOP & PACK OFF LIGHT ILLUMINATED. LIGHT RE-ILLUMINATED AFTER PACK RESET IN STANDBY. MAINTENANCE REMOVED AND REPLACED COMPRESSOR OUTLET SENSOR TS41 IN ACCORDANCE WITH M.M. 21-51-11. PERFORMED OPS CHECK, PACK CHECKS NORMAL IN STANDBY MODE. OPERATIONAL CHECK IN AUTO MODE FAILS. REF 2150/859 LOGPAGE 519724 ITEM 4 FOR NEW DISCREPANCY.

Part: FIRE LOOP — CHAFED (RT ENGINE) · airframe 3,846 hrs · 1,439 cycles

DURING CRUISE RIGHT ENGINE FIRE LOOP 1 STATUS MESSAGE INTERMITTENT ON/OFF THROUGHOUT FLIGHT. MAINTENANCE TROUBLESHOT PER FIM 26-11-00, AND WDM'S 26-11-21 & 71-51-11, FOUND NR 3 FIRE DETECTOR WIRE W5008-0008-18 WITH SMALL CHAFE TO GROUND, REPAIRED WIRE PER STD PRACTICES. OPERATIONAL CHECKS GOOD.

Part: WARNING SYSTEM — FALSE ACTIVATION (RT ENG FIRE LOOP) · airframe 3,816 hrs · 1,427 cycles

FLIGHT NUMBER 717. DURING CRUISE STATUS MESSAGE R ENG FIRE LP 1 DISPLAYED. MAINTENANCE RERACKED AFOLTS CARDS PER FIM 26-11-00, FIG 103, SHEET 4, BLOCK 111. NO FURTHER DEFECTS NOTED AT THIS TIME. AIRCRAFT RETURNED TO SERVICE.

Part: CIRCUIT CARD — MALFUNCTIONED (E&E BAY) · airframe 3,816 hrs · 1,427 cycles

FLIGHT NUMBER 593. DURING CRUISE RIGHT ENGINE FIRE LOOP 1 STATUS MESSAGE INTERMITTANT ON/OFF THROUGHOUT FLIGHT. MAINTENANCE REMOVED AND REPLACED RIGHT ENGINE LOOP NR 1 FIRE DET. CIRCUIT CARD PER MM 26-10-01. OPERATIONAL CHECKS GOOD.

Part: TRANSDUCER — MALFUNCTIONED (RT ENGINE) · airframe 3,077 hrs · 1,185 cycles

FLIGHT NUMBER 935. DURING TAKEOFF ROLL RIGHT ENGINE LIMITS EXCEEDED. LEFT ENGINE N2-104, N3-100; RIGHT ENGINE N2-101 NO ENGINE SURGES DURING THIS EVENT. CREW ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE REMOVED AND REPLACED NR 2 ENGINE PLA TRANSDUCER IN ACCORDANCE WITH MM 75-32-14. OPERATIONAL CHECK AND ENGINE RUNS GOOD.

Part: TRANSDUCER — FAULTY (RT ENGINE) · airframe 3,077 hrs · 1,185 cycles

FLIGHT NUMBER 935. DURING TAKEOFF ROLL ENGINE LIMITS EXCEEDED, LEFT ENGINE N2-104, N3-100; RIGHT ENGINE N2-101. NO ENGINE SURGES DURING THIS EVENT. MAINTENANCE REMOVED AND REPLACED THE PLA TRANSDUCER PER MM 75-32-14 ON THE NR 2 ENGINE. OPERATIONAL CHECKS AND ENGINE RUNS GOOD.