N77431
Registered owner: UNITED AIRLINES INC, IL (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| UNITED AIRLINES INC | Operator | 2023-07-28 – 2023-07-28 | Operator named in NTSB report |
| UNITED AIRLINES, INC. (CALA) | Operator | 2023-07-28 – 2023-07-28 | Operator named in NTSB report |
Accident & incident history
Maintenance disclosures
FLAPS FAILED TO RETRACT PAST 5 ON DEPARTURE. CREW ERROR WENT PASSED DETENT INTENDED TO FAST AND LOCKED OUT FSCU. RESET CIRCUIT BREAKER OF FSCU, ALL FLAPOPERTIONS NORMAL. REF FIM 32-09 814. PER THE CAPTAIN HE STATED TOOK OFF AT FLAPS 5 FLAP LEVER WAS NOT IN THE DETENT, MOVED AROUND AND THEN MOVED THE FLAP LEVER IN THE DETENT AND WOULDNT GO PASSED FLAP 5. PER FIM 27-51 801 LEG 0 SHOWS MESSAGE FLAP UCM
EMERGENCY LIGHTS OPERATIONAL CHECK - EEL AT ROW 24 IS INOPERATIVE. RELAMPED FLOOR PROXIMITY LIGHT FOR SEAT 24 IAW AMM 33-51-11-960-801. OPS CHECKED GOOD.
ESCAPE SLIDE PACK BUSTLE DAMAGED 2R GIRT BAR IS UNABLE TO BE STOWED. ESCAPE SIDE PACK CHECK REF AMM 25-66-01-200-802. OK TO CONTINUE.
R1 DOOR SLIDE TAB EXCESS MATERIAL STICKING OUT. INSPECTED R1 SLIDE TAB FOR EXCESS, INSPECTION FOUND TO BE WITHIN THE LIMITS IAW AMM 25-66-01. NO OTHER DEFECTS NOTED.
SEAT EMERGENCY LIGHTS FROM ROW 15-22 ARE INOPERATIVE. REPLACED FUSES F2 & F3 ON THE M1694 EMERGENCY LIGHT POWER SUPPLY, NO HELP. SLAVED IN A NEW EMERGENCY LIGHT BATTERY, NO HELP. SLAVED IN A KNOWN OPERABLE POWER SUPPLY AND BATTERY, NO HELP. MEASURED RESISTANCE AT 2 PINS IN SEAT SIDE OF CONNECTOR D12 828 AS 0.6 OHMS WITH NEITHER SHORTING TO GROUND. DADO PANELS REMOVED, ACCESSED POWER SUPPLY & NEW EMERGENCY LIGHT BATTERY AVAILABLE. FOUND AFT SEAT LIGHT AT SEAT 20C SHORT CIRCUIT, REPLACED LIGHT ASSY REF AMM33-51-11 AND CONFIG DRAWING 3350DD15107 . REPLACED BATTERY AND FUSE AT PSU 1694 REF AMM33-51-06. ACCOMPLISHED OPS CHECK ALL LIGHTS OPS CHECK GOOD. ACCOMPLISHED IDT INSPECTION FOR EXIT PATH LIGHTING REPLACMENT. REF GMM 09-10-05.
DOOR 1R ESCAPE SLIDE APPEARS TO BE FALLING OUT OF PACK. SECURED SLIDE PACK AT DOOR 1R MM REF25-66-01
EMERGENCY LIGHTING SYSTEM FAIL FUNCTIONAL CHECK M1695 (REF AAR N R 1000030859). REMOVED AND INSTALLED BATTERY PACK ASSY M1695 IAW B737 AMM 33-51 -06-960-805. TEST OK FAILED FUNCTION CHECK DURING D CHECK IN RFD, SDR GENERATED. REMOVED AND INSTALLED BATTERY PACK ASSY M1695 IAW B737 AMM 33-51 -06-960-805. TEST OK.
EMERGENCY LIGHTING SYSTEM FAIL FUNCTIONAL CHECK M1673. (REF AAR NR 1000030861). REMOVED AND INSTALLED EMERGENCY BATTERY PACK ASSY IAW B737 AMM 3 3-51-06-960-805. TEST OK.
EMERGENCY LIGHTING SYSTEM FAIL FUNCTIONAL CHECK M1671 (REF AAR N R 1000030860). REMOVED AND INSTALLED EMER BATTERY PACK ASSY IAW B737 AMM 33-51- 06-960-805. TEST OK. (M1671) BATTERY PACK FAILED FUNCTIONAL CHECK DURING D CHECK IN RFD. REMOVED AND INSTALLED EMER BATTERY PACK ASSY IAW B737 AMM 33-51- 06-960-805. TEST OK (M1671).
FWD WET AREA, CORROSION OUT OF LIMITS ON INTERCOSTAL BTW STA 294.5 TO STA 303.9 LBL 8 REQUIRE REPLACE (REF: AAR NR 1000031076) REMOVED AND REPLACED INTERCOSTAL FWD WET AREA BTW STA 294.5 TO STA 303.9 LBL 8 ALL WORK DONE IAW B737-900E ER AMM 20-60-07-913-801, DWG NO. 141A5600, SRM 51-40-05, SRM 51-40-05, SRM 51-40-02-0G-0 (WORK ACCOMPLISHED BY V945231 AND AAR QC A-40 V947834) REPLACED INTERCOASTAL MFG P/N 141A5690U1. LEFT SIDE STA295.5 TO STA 303.9 LBL 8. REFERENCE SRM 51-40-02-06-00, PAGE 1 TO 85, FIGURE 1. REMOVED AND REPLACED INTERCOSTAL FWD WET AREA BTW STA 294.5 TO 3 03.9 LBL 8 ALL WORK DONE IAW B737-900ER AMM 20-60-07-913-801, DR W. NO 141A5600, SRM 51-40-05, SRM 51-40-02-0G-0.
MID WET AREA PASSENGER SEAT TRACKS HAS CORROSION AT STA 500D TO 500F LBL 25 (REF AAR NR 1000031086). ESFR COMPLETED. ESFR COMPLETED
FWD WET AREA PASSENGER FLOOR STRUCTURE HAS CORROSION AT STA 328- 344 LBL 23 (REF AAR NR 1000031085) ESFR COMPLETED REMOVED AND REPLACED FWD WET ARE PASSENGER FLOOR STRUCTURE SUPPO RT STA 328-344 LBL 23 IAW B737-900ER SRM 51-40-02-0G-0 STEP 7, 5 1-10-02-09-0 STEP 15, 53-10-51-1A-1 FIG 105 DET. C, 51-40-05-0G- 0;AMM 20-60-07-913-801 AND BOEING DWG 141A5730 REV A.
CORROSION ON FWD CARGO COMPARTMENT WEB, REQUIERE REPLACEMENT (REF AAR NR 1000031047). ESFR CONPLETED. REPLACED WEB AT FWD CARGO COMPARTMENT IAW SRM 51-40-0 2-G0, DWG 143A8122 REV, SRM 51-40-05-0G-0, SRM 51-40-08-0G SRM 5 1-40-08-0G STEP 14, AMM 51-21-41-370-803 STEP 4, AMM 51-21-70-37 0-804 STEP 4 AMM 51-21-72-370-804 STEP 5 AND DWG 143A8330 REV A.
MID WET AREA PASSENGER SEAT TRACKS HAS CORROSION AT STA 500D TO 500E LBL 46 (REF AAR NR 1000031087) ESFR COMPLETED REPAIRED SEAT TRACKS AND CHANNEL ON MID WEST AREA BETWEEN STA 50 0B TO 520 LB2 46 ALL WORK IS DONE IAW B737-900ER AMM 20-60-07-91 3, SRM 53-00-52-1A-1, SRM 51-40-02-0G-0 SRM 53-00-52-2R-4 SOPM 2 0-43-03. 20-41-02, 20-14-04, AMM 51-21-72, AMM 20-50-11-910-801 AND SOPM 20-41-05.
AFT WET AREA, CORROSION OUT OF LIMITS ON INTERCOSTAL BTW STA 947.5 TO STA 967 RBL 47 REQUIRE REPLACE (REF AAR NR 1000031075)
FWD WET AREA PASSENGER FLOOR STRUCTURE HAS CORROSION STA 328-344 LBL 44 (REF AAR NR 1000031084) ESFR COMPLETED REMOVED AND REPLACED FWD WET ARE PASSENGER FLOOR STRUCTURE SUPPORT BTW STA 328-344 LBL 44 IAW B737-900ER SRM 51-40-02-0G-0 STEP 7, 51-40-05-0G-0 51-10-02-0G-0, STEP 15 53-10-51-1A-1 FIG 105 DE T.C;AMM 20-60-07-913-801,AND BOEING DWG 141A5730 REV A.
AFTER REMOVAL OF THE DAMAGE MACHINED INTERCOSTAL AND FITTING FOUND DAMAGE CORROSION UNDER HARD POINT GALLEY FITTING REQUIRE REPAIR FLOOR BEAM STA 947.5 RBL 46 (REF: AAR NR 1000031077) ESFR COMPLETED PERFORMED REPAIR AT FLOOR BEAM STA 947.5 RBL 46 IAW B737-900ER S RM 53-70-2R-5 SRM 51-00-0G SRM 51-10-02 SRM 51-20-01 SRM 51-40-0 5 SRM 51-40-0G SOPM 20-20-02 SOPM 20-10-03 SOPM 20-41-02.
EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK {B737-33-3-0235} - EMERGENCY FLOOR PROXIMITY LIGHT FROM ROW 26 TO ROW 14 INOP. REMOVED AND REPLACED POWER SUPPLY FUSE IN REFERENCE AMM 33-51-06-960-804. OPS CHECK GOOD
DOOR 1L EMER EXIT LIGHT OUT REMOVED AND REPLACED BATTERY PACK M1675 REF WDM 33-51-12-6 AND AMM 33-51-06, OPS CHECK GOOD
EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK {B737-33-3-0235} - DOOR 1R EMERGENCY LIGHT EXIT SIGN MISSING FRONT COVER AND ALL BULBS INOP. RELAMPED ENTIRE SIGN REF AMM 33-51-01-960-801. NO JOY. REQUIRES ENTIRE ASSY. PARTS USED: OL3071BPEGPL,QTY :5 REPLACED LIGHT ASSY REF AMM 33-51-01-960-802. NO JOY. T/S REF WDM 33-51-21-6. WIRES CHECK GOOD. REPLACED FUSES IN CHARGER M1674 REF AMM 33-51-06-960-804. OPC NORMAL.
ENG 1 LOW PRESSURE LIGHT LIGHT ON LIGHT CAME ON DURING CLIMBOUT PASSING APPROX 15K FEET UPDATED MAA CODE FIX USING VENDOR MAA SCREEN PLEASE CONTACT TOMC BEFORE COMMENCING ANY WORK. ROTABLE PARTS ENTRY MADE. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1406150 SN OFF 3052 PUMP, HYD ENG D OFF 29-2910-9-0003 3052 ON 29-2910-9-0003 6830 R&R #1 ENG HYDRAULIC PUMP AND ROTATTING SEAL REF AMM 29-11-11 -000-801-001. RAN #1 ENG 30 MIN AND FOUND NO LEAKS. SERVICED A SYSTEM TO FULL
ENG FAIL MESSAGE SHOWS OVER EGT INDICATION ENGINE 2 RT ENG FAIL UNABLE TO RESTART DIVERT TO KLAX 29-7300-3-0049,QTY :1 29-7300-3-0011,QTY :1 AS REQUESTED PERFORMED FIM TASK 73-05 TASK 805 STEP E(2) EEC BITE IMAGES ATTACHED. DAMAGED LEAKING FUEL LINE AND GASKET IMAGES UPLOADED. IMAGE UPLOADED, GASKET, SEAL AND TUBE-FUEL FSV (DISCHARGE) IPC FOUND #2 ENG HMU FUEL TUBE (33) FUGURE 401. GASKET LEAKING FUEL LABOR UPDATE VISUALLY INSPECTED ENGINE INLET AND EXHAUST.NOTICED RESIIDUAL 73-11-00-02A ITEM 155 AND ITEM 160. DURING WET MOTORING. REMOVED AND REPLACED FUEL TUBE AND GASKET ADD EMP:U371942,U391799 FUEL LEAKAGE AT LOWER SIDE OF ENGINE AS INDICATED IN PICTURES AS REQUIRED. REF AMM 73-21-10. PERFORMED POWERPLANT TEST 8, 12, ADD EMP:U162957 13, 3A. NO LEAKS NOTED NO FAULTS FOUND.PARTS USED: VERIFIED INSTALLATION OF HMU FUEL TUBE ON #2 ENG. FOUND #2 ENG HMU FUEL TUBE (33) FUGURE 401. GASKET LEAKING FUEL 29-7200-3-0005,QTY :1 29-7921-3-0034,QTY :1 29-7300-3-0010,QTY DURING WET MOTORING. REMOVED AND REPLACED FUEL TUBE AND GASKET :1 AS REQUIRED. REF AMM 73-21-10. PERFORMED POWERPLANT TEST 8, 12, 13, 3A. NO LEAKS NOTED NO FAULTS FOUND.
FWD SEAT MOUNTED EMERGENCY LIGHT ON ROW 3AB DAMAGED. REMOVED AND REPLACED LIGHT ASSY REF MM 33-51-11. OPS CK OK. BOTH LIGHTS INSTALLED AND OPERATIONAL
BOTH PACK LIGHTS ILLUM MID CRUISE AT FL330 PERFORMED OPERATIONAL CHECK OF AIR CONDITION PACK SYSTEM REF AMM 21-00-00-800-803, NO FAULTS FOUND. PER LP 7939006 BOTH PACK LIGHTS ILLUM MID CRUISE AT FL330 PERFORMED OPERATIONAL CHECK OF AIR CONDITION PACK SYSTEM REF AMM 21-00-00-800-803, NO FAULTS FOUND..
PDA 3 RIGHT WING OUTBD AFT T/EDGE FLAP AERODYNAMIC SEAL ON LEADING EDGE MISSING/BROKEN JUST OUTBOARD OF #7 FLAP CANOE FAIRING-- SEE PHOTO ONLY 1 MISSING - REQUEST CDL 57BZ CDL APPLIED -- PARTS ADDED PER IPC 27-51-22-01 ITEM 122 DISPATCH DESK: 05 NAME: TK DATE: 06-NOV-21- TOMC APPROVED PHOTO ADDED PHOTO - CDL FIG 120 ; CDL CARD 575390
RIGHT FWD OVER WING EXIT, EXTERIOR EMERGENCY EGRESS LIGHT INOPERABLE. RELAMPER, REF AMM 33-51-04 ADD EMP: U166355.
INFLT WX RADAR FAILED SCREEN SHOWS WXR FAIL CONT STAB. REMOVED AND REPLACED WEATHER RADAR TRANSCEIVER M.M. 34-43-41. DURING OPS CHECK M.M. 34-43-00 WEATHER RADAR WOULD NOT TEST. TEST LIGHTS ON RADAR CONTROL PANEL WERE INTERMINTENT. REMOVED AND REPLACED RADAR CONTROL PANEL. WEATHER RADAR OPS CHECKS GOOD. ROTABLE PARTS CHANGE WAS INDICATED-TT NR 1153601 SN OFF 4245 TT NR 1173026 SN OFF 7807 PANEL, CONTROL, OFF 29-3443-9-0007 4245 ON 29-3443-9-0007 5449 TRANSCEIVER, WX OFF 99-2317-9-0001 7807 ON 99-2317-9-0001 9592.
EMER EXIT INDICATOR SIGN MISSING FROM GALLEY WALL JUST AFT OF DOOR 2 LEFT. SEE IPC 33-51-01-06F ITEM 55Y. LOCATED WIRING THROUGH ACCESS PANEL IN G4GALLEY COMPARTMENT 437. INSTALLED AND TESTED EMERGENCY LIGHT REF AMM 33-51-14. OPS CHECKS NORMAL. ACCESS PANEL SECURED IN COMPARTMENT 437.
MAIN CABIN SEAT TRACK HAS CORROSION AT STA 500C LBL 24.75. SPLICED IN NEW SECTION OF SEAT TRACK FROM STA 480 TO STA 500C + 10" PER SRM 53-00-52 REPAIR 4.
MAIN CABIN SEAT TRACK HAS CORROSION AT STA 500C LBL 45.4 - REF FLEET CYCLE LOG PAGE 9672794 SEE FLEET CYCLE LOG 9672794 FOR DETAILS OF WORK ACCOMPLISHED. SPLICED IN NEW SECTION OF SEAT TRACK FROM STA 480 TO STA 500C + 10" PER SRM 53-00-52 REPAIR 4.
LT HORIZONTAL STAB CRACKED AT STA 193.9. REPAIRED LH HORIZONTAL LOWER INSPAR SKIN AT STA. 193.9 REF 737 SRM 55-10-01 REPAIR 11. DIP REQUIRED-INSPECTION THRESHOLD OF 56000 TOTAL FLT CYCLES AND 9000 FLT CYCLES INTRVLS THERAFTER. ADD EMP:U105472 TOMC APPROVES DIP, INSPECTION THRESHOLD OF 56000 FLT CYCLES AND A REPETITIVE DVI AND LFEC AT 9000 FLT CYCLES PER SRM 55-10-01 REPAIR 11, TABLE 204 TOMC-APPROVAL FROM SC1ELBYC COMMENT VERIFIED REPAIR INSTALLATION AND DIP INITIATION. REF SRM 55-10-0 1 REPAIR 11. SEE FLEETCYCLE L/P# 9671099 FOR ALL WORK ACCOMPLISH ED. INSPECTIONS CREATED BY AUTODIP PENDING AIRCRAFT RECORDS AUDIT & UPDATE. QC QC
LT. HORIZONTAL STAB. CRACKED AT STA 147.9. REPAIRED LH HORIZONTAL LOWER INSPAR SKIN AT STA. 147.9 REF 737 SRM 55-10-01 REPAIR 11. DIP REQUIRED-INSPECTION THRESHOLD OF 56000 TOTAL FLT CYCLES AND 9000 FLT CYCLES THERAFTER. ADD EMP:U105472 TOMC APPROVES DIP, INSPECTION THRESHOLD OF 56000 FLT CYCLES AND A REPETITIVE DVI AND LFEC AT 9000 FLT CYCLES PER SRM 55-10-01 REPAIR 11, TABLE 204 TOMC-APPROVAL FROM SC1ELBYC COMMENT VERIFIED INSTALLATION OF REPAIR AND DIP INITIATION.REF SRM 55-10 -01, REPAIR 11.
DURING AN EMERGENCY LIGHT TEST, FIRST CLASS FLOOR, R1 DOOR, L2 DOOR, ROWS 27-39 FLOOR AND STOWBIN LIGHTS INOPERATIVE. REMOVED AND REPLACED THE BATTERY PACKS M1673 , M1674, AND M2626. OPS CHECKED OK IAW MM 33-51-06-960-805.
EMERGENCY EXIT LIGHT AT L1 DOOR EXTERIOR, INOP. REPLACE BULB 767, OPS OK.
EMERGENCY LIGHTS ON STOW BINS INOPERATIVE AT ROW 30DEF. REPLACED EMERGENCY POWER SUPPLY BATTERY, OPS CHECKED GOOD IAW MM 33-5 1-00.
FOUND ON WALK AROUND 2 SVC R2 DOOR EMERGENCY LIGHT INOP. REPLACED BATTERY PACK OPS CKS NORMAL.
FWD EMERGENCY LT OVER DOOR 1L INOP. REPLACED FWD EMER LT BATTERY AND CHARGER. OP CHECK GOO VERIFIED FWD LT DR EMERGENCY LT OPERATION. OP CHECK OK.
ELECTRICAL SMELL IN FWD GALLEY SPREAD THROUGHOUT CABIN, DIVERTED. WHILE PERFORMING SMOKE ODOR CONDITIONAL INSPECTION IAW AMM 05-51-2 6-801C, FOUND LT RECIRC FAN CB POPPING. R & R LT RECIRC FAN IAW AMM 21-25-02. R & R AIR FILTERS IAW AMM 21-25-01.
PERFORMED HIGH ACT APU START FOR TOMC. NEEDED 3 ATTEMPTS TO GET APU RUNNING. WHEN ON GND APU STARTED BUT NO APU GEN FAULT CODE, APU ECU M1709 BAD, PN 29-4961-9-0002. R & R APU ECU IAW AMM 49-61-12, ALL OPERATIONS CHECKED GOOD AT THIS TIME. RAN APU 3 TIMES WITH FULL LOADS OK TO CONTINUE. ROTABLE PARTS CHANGE WAS INDICATED TT 1705900 SN OFF 00310 UNIT, ELECTRONIC OFF 29-4961-9-0002 0310 ON 29-4961-9-0002 0068.
RT HORIZONTAL STAB LOWER SKIN BY STATION 101.90 CRACK FOUND. 19" FROM REAR SPAR LENGTH OF ABOUT 1" LONG IAW EA 5510-01843 REV C REF LG PG 9629509 STATION 101.90. CRACKS AT 10" & 19" HAVE BEEN REPAIRED IAW SRM 55-10-01 REPAIR 11.
MIDDLE LIGHT EMERGENCY BATTERY EQUIP M01694 FAILS CAPACITY CHECK. REPLACED BATTERY EQUIPMENT M01694 IAW AMM 33-51-06. OPERATIONS CHECKED NORMAL
FORWARD RT EMERGENCY BATTERY CHARGER EQUIPMENT M01674 FAILED AFTER BATTERY CHANGE. REPLACED BATTERY CHARGER EQUIPMENT M01674 IAW AMM 33-51-06. OPERATION CHECKED NORMAL.
AFT LEFT EMERGENCY BATTERY EQUIPMENT M01673 FAILS CAPACITY CHECK. REPLACED EMERGENCY BATTERY EQUIPMENT M01673 IAW AMM 33-51-06. OPERATION CHECKED NORMAL.
FORWARD RT EMERGENCY BATTERY EQUIPMENT M01674 DOES NOT PASS CAPACITY TEST. REPLACED RT FORWARD EMERGENCY LIGHT BATTERY & POWER SUPPLY IAW AMM 33-51-06. OPERATIONS CHECKED NORMAL. EQUIPMENT M01674, M/E 29-3351-3-0013