N27957

BOEING 787-9 · 2015 · Fixed-wing multi-engine · 2 engines · 422 seats · Valid Registration

Registered owner: UNITED AIRLINES INC, IL (owner ≠ operator)

Operators of this aircraft

Who operated this tail, and how firmly we know it.

OperatorRolePeriodBasis
UNITED AIRLINES, INC. (CALA)Operatoron 2024-05-14Operator named in NTSB report

Accident & incident history

Incident · 2024-05-14 Operator named in NTSB report
BOEING 787 No injuries Part 121UNITED AIRLINES, INC.

Operated by United Airlines (per NTSB report)

Source: NTSB case ENG24LA014

Maintenance disclosures

Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.

25 reports on file, 2017-08-08 – 2025-10-17.

NO TEST · 2025-10-17 Matched by certificate designator
ATA 3350

Part: LIGHT — INOPERATIVE (ZONE 200) · airframe 46,202 hrs · 4,420 cycles

FOUND SEAT 44D & 54D EMER LT INOP. SEAT 44D EMER LIGHT ASSY REPLACED.LIGHT CHECK SATIS.RESTORED TO ORIGINAL CONFIG. SEAT 54D EMERGENCY LIGHT ASSY REPLCED IAW B787-A-33-51-06-00A-520A-A/720A-A. OPS CHECK PASSED.

Source: SDR CALA2025101710227
OTHER · 2025-10-17 Matched by certificate designator
ATA 3350

Part: LIGHT — INOPERATIVE (ZONE 200) · airframe 46,263 hrs · 4,425 cycles

FOUND SEAT 44D & 54D EMER LT INOP. SEAT 44D EMER LIGHT ASSY REPLACED.LIGHT CHECK SATIS.RESTORED TO ORIGINAL CONFIG. SEAT 54D EMERGENCY LIGHT ASSY REPLCED AS PER B787-A-33-51-06-00A-520A-A/720A-A.OPERATIONAL CHECK ON SEAT 54D EMERGENCY LIGHT PASSED.

Source: SDR CALA2025102110356
FLT CONT AFFECTED · 2025-08-09 Matched by certificate designator
ATA 2700

Part: SENSOR — FAULTED (ZONE 300) · airframe 45,424 hrs · 4,351 cycles

STABILIZER CONTROL CHANNEL (L2) HAS BEEN DEFERRED IN COMPLIANCE WITH MEL CARD 27105. DEACTIVATED THE INOPERATIVE STAB CONTROL CHANNEL AS REQUIRED ON CARD 27105, IAW AMM DDG 27-41-03. INSTALLED INOPERATIVE STICKER ADJACENT TO AFFECTED L2 STAB CUTOUT SWITCH ON FWD CONTROL STAND. REPLACED HORIZONTAL STAB POSITION SENSOR 2 IAW AMM DMC-B787-A-27-48-01-00A-520A-A GROUND TEST PASSED.

Source: SDR CALA2025081407729
SMOKE/FUMES/ODORS/SPARKS · 2025-05-23 Matched by certificate designator
ATA 2121

Part: FAN — FAILED (ZONE 200) · airframe 44,312 hrs · 4,246 cycles

FUMES NOTICED FROM PAX A ND CREW IN AREA OF CABIN ROW 46. DEBRIEFED CREW. SEE PAPERWORK. PER FLIGHT CREW NO FLIGHT DECK EFFECTS. INFLIGHT CREW NOTICED SMELL WENT AWAY AFTER PILOTS TURNED OFF IFE SWITCH AND RECIRC FAN PRESENT LEG SHOWS UPR RECIRC FAN FAILED IN FLIGHT. ON GND THE UPR RECIRC FAN WOULD NOT COME ONLINE, NEED TO REPLACE RECIRC FAN , M/E 79-2127-9-0001, IPC REF 21-25-16-010-941A-D. PAST IS NIS. CONDITIONAL CHECK WAS ACP PER FIM DMC B787-A-21-20-F5-72A-421A-A. REMOVED AND REPLACED UPPER RECIRCR FAN REF AMM 21-25-16.OPS CHK GOOD .RUN PACKS NO MORE FUME/SMELL NOTED

Source: SDR CALA2025052704985
OTHER · 2025-03-19 Matched by certificate designator
ATA 3350

Part: LIGHT — FAULTY (ZONE 200) · airframe 43,349 hrs · 4,154 cycles

SEAT 30D WITH EMERGENCY PATH LIGHT BROKEN. REMOVED AND REPLACED PROXIMITY LIGHT. AS REF AMM TASK DMC-B787-A-33-51-06-00A-520A-A/DMC-B787-A-33-51-06-00A-720A-A ITEM GOOD FOR SERVICE. OPS TEST OK.

Source: SDR CALA2025032002994
NO TEST · 2025-01-09 Matched by certificate designator
ATA 3350

Part: LIGHT — NO TEST (ZONE 200) · airframe 42,479 hrs · 4,065 cycles

PROCEDURE - EMERGENCY PROXIMITY LIGHT FROM SEAT 30D DOES NOT COME ON DURING TEST. REPLACED FLOOR PRIMITY LIGHT IN REF TO AMM 33-51-06-00A-520A-A AND AMM 33-51-06-00A-720A-A. ITEM OK AFTER TEST.

Source: SDR CALA2025011001861
Earlier reports · 2017–2024 · 19 reports

2024

OTHER · 2024-10-18 Matched by certificate designator
ATA 3350

Part: LIGHT — BROKEN (ZONE 200) · airframe 41,352 hrs · 3,953 cycles

BROKEN 12F SEAT PROXIMITY EMER LT. REPLACED EMER LT ASSY, OPS CHK OK.

Source: SDR CALA2024102100879
ENGINE FLAMEOUT; WARNING INDICATION · 2024-05-14 Matched by certificate designator
ATA 7200

Part: ENGINE — FLAMED OUT (LEFT) · airframe 39,401 hrs · 3,766 cycles

ENG FAIL L CAUTION THE LEFT ENGINE HAS FLAMED OUT AND RUN DOWN BELOW IDLE SPEED. FIM TASK REF : G73-90-F8-01A-421B-A CMC MSG# 7332901 FLIGHT STATUS: A INTERMITTENCE CODE: M PH: CLIMB NARRATIVE: ELECTRONIC ENGINE CONTROL CHAN-B (LEFT ENG) SDR FLAGGED.

Source: SDR CALA2024051601483

2023

OTHER · 2023-10-29 Matched by certificate designator
ATA 5754

Part: SLAT — DAMAGED (LEFT WING) · airframe 38,313 hrs · 3,665 cycles

DURING MARSHELLING OF THE A/C. JET BRIDGE STATIONED AT B66 COLLIDES WITH THE LEADING EDGE OF LEFT WING CAUSING SERIOUS DAMAGE. ATTACHED ADDITIONAL PICTURES OF LEFT WING LEADING EDGE DAMAGE SLAT # 2 & #3 M&E # SEE LOG PAGES 6164370 & 6164494 FOR WORK PERFORMED.

Source: SDR CALA2023112203448

2022

OTHER · 2022-04-21 Matched by certificate designator
ATA 3200

Part: GEAR — INOPERATIVE (NLG) · airframe 30,299 hrs · 2,933 cycles

AFTER TAKEOFF GEAR DISAGREE SOUND LIKE NOSEGEAR DOWN DOES NOT FOLLOW COMMAND W/ MX MSG 32-51001, MSG ACTIVE WENT TO INACTIVE WITH GEAR HANDLE DOWN. CREW DEBRIEF: CREW STATED GEAR HANDLE UP, GEAR DISAGREE SOUNDED LIKE GEAR DID NOT RETRACT & DOORS DID NOT CLOSE, PLACED GEAR HANDLE DOWN PER QRH & LANDING GEAR INDICATION NORMAL AND FAULTS CLEARED. AHM CONFIRMS FAULT MX "GEARS DOORS" LANDING GEAR DOORS DUE TO REPEAT FAILURE AND BOEING DIRECTION PLEASE REF. L/P''S 8409606, 8409594, 8409583 FOR COMPONENENT REPLACEMENT DIRECTION. REF LP 8416075. NOSE GEAR RETRACTION WAS PERFORMED AFTER PARTS REPLACEMENT. CLOSED LOG

Source: SDR CALA2022042101046
WARNING INDICATION; OTHER; AFFECT SYSTEMS · 2022-04-14 Matched by certificate designator
ATA 3220

Part: DOOR — WARNING MESSAGE (UNKNOWN) · airframe 30,265 hrs · 2,926 cycles

GEAR DISAGREE EICAS MSG. GEAR DOOR CAUTION MSG. WITH NOSE GEAR INDICATION SHOWING HASHED. MAINTENANCE MESSAGE 32-51001. FLIGHT CREW BELIVE NLG DID NOT RETRACT WHEN COMMANDED. AIRCRAFT SUBSEQUENTLY DUMPED FUEL AND RETURNED TO LHR.

Source: SDR CALA2022041800998
NO TEST · 2022-03-09 Matched by certificate designator
ATA 3300

Part: CONNECTOR — LOOSE (DOOR 2L) · airframe 29,922 hrs · 2,883 cycles

L2 DOOR EMERGENCY EXIT SIGN ABOVE DOOR INOP REF HAECO NON-ROUTIN E NO.9481658 - ORIGINATED BY EMP AS PER N27957(0957) HANGAR NON-ROUTINE PICK UP SHEET (07 MAR 2022) ITEM 1. PERFORMED BY EMP REINSTALLED THE ELECTRICAL CONNECTOR TO DR 2L EXIT MARKING SIGN L3351003 AND PERFORMED OPERATIONAL TEST OF THE EMERGENCY LT FOUND NORMAL REF TO AMM 33-51-02-00A-72 0A REV 158 & AMM 33-51-00-00C-320A REV 158. IDT BY

Source: SDR CALA2022030900619
OTHER · 2022-03-01 Matched by certificate designator
ATA 3300

Part: CABLE — NONE (PAX SEAT 31DF) · airframe 29,922 hrs · 2,883 cycles

DURING PERFORM EMERGENCY LIGHT SYSTEM FULL TEST FOUND PAX SEAT 30DF TO 35DF EMERGENCY LIGHT NOT COME ON REF HAECO NON-ROUTINE NO.9479642 - ORIGINATED BY EMP EA 4400-01112 REV A OP001 . PERFORMED BY EMP REFER FIM 33-50-F1-W5A-421A-A REV 140 AND SSM 33-51-11-0A-054A-D REV 136 PERFORMED T/S FOUND PAX SEAT 31DF INSEAT WIRE HARNESS FAULTY. THAT HARNESS CONNECTOR J,PIN 02 PUSHED BACK DUE TO THE LOCK BROKEN. REPLACED THE WIRE HARNESS AND PERFORMED EMERGENCY LIGHT SYS FULL TEST. THE RESULT FOUND "PASSED". PAX SEAT 30DF TO 35DF EMERGENCY LIGHT COME ON REFER AMM 33-51-00-07A-343A-A REV 157. SDR SHOULD BE CHANGE TO Y.

Source: SDR CALA2022030100538

2021

OTHER · 2021-12-01 Matched by certificate designator
ATA 2310

Part: NONE — INOPERATIVE (LH AND RH) · airframe 29,281 hrs · 2,809 cycles

LEFT HF INOP MAINT MESSAGES 42-59471 AND 23-19401. MESSAGES NOT ACTIVE UPON AND AMM 23-11-05. HF OPERATIONAL TEST CHECKS GOOD. ARRIVAL. REPLACED LEFT HF TRANSCEIVER PRECAUTIONARY. RESET ROTABLE PARTS CHANGE WAS INDICATED - TT # 1195254 SN OFF 8018 CROWN DOOR 4L CCS REMOTE DATA CONCENTRATOR 17. REF FIM TASKS DMC-B787-A-42-40-F1-AVA-421A-A. DMC-B787-A-23-10-F1-38A-421A-A. TRANSCEIVER, HF OFF 78-2311-9-0001 8018 ON 78-2311-9-0001 4002

Source: SDR CALA2021120102231
OTHER · 2021-02-25 Matched by certificate designator
ATA 5320

Part: BEAM — CORRODED (MID LAVATORY) · airframe 25,792 hrs · 2,423 cycles

M LAV UNDER SCUFF PLATE BEAM AND FRAME CORROSION REF NON-ROUTINE NR.9426069. SPEC NO.B787-25-3-0069. M LAV UNDER SCUFF PLATE BEAM AND FRAME REPLACED AS PER ECRA 2541 -01547 REV. ORIG.

Source: SDR CALA2021022600230
OTHER · 2021-02-22 Matched by certificate designator
ATA 3350

Part: LIGHT — CRACKED (G9B GALLEY) · airframe 25,792 hrs · 2,423 cycles

THE LEFT FLOOR PROXIMITY LIGHT AT DOOR 3 GALLEY G9B FND CRACKED REF NON-ROUTINE NO.9426063. REPLACED DOOR 3 G9B GALLEY LT 2 EA FLOOR PROXIMITY LIGHT. PERFORMED OP TEST OF EMERGENCY LT FOUND NORMAL REF AMM 33-51-06- 00A-720A REV.144.

Source: SDR CALA2021022200216
OTHER · 2021-02-22 Matched by certificate designator
ATA 3350

Part: LIGHT — CRACKED (DOOR 1 OFCR PNL) · airframe 25,792 hrs · 2,423 cycles

THE LEFT AFT, RIGHT FWD AND RIGHT AFT FLOOR PROXIMITY LIGHT AT DOOR 1 OFCR PANEL FOUND CRACKED REF NON-ROUTINE NO.9426059 - SPEC NO. B787-33-3-0002. THE LEFT AFT, RIGHT FWD AND RIGHT AFT FLOOR PROXIMITY LIGHT AT DOOR 1 OFCR HAD BEEN REPLACED, PERFORMED OPERATIONAL TEST OF EMERGENCY LIGHT, THE RESULT WAS ''SATIS'' REF TO AMM 33-51-06-00A- 720A-A REV.144.

Source: SDR CALA2021022200210
OTHER · 2021-02-22 Matched by certificate designator
ATA 3350

Part: LIGHT — CRACKED (G5 GALLEY) · airframe 25,792 hrs · 2,423 cycles

THE LEFT FWD, LEFT AFT, RIGHT FWD AND RIGHT AFT FLOOR PROXIMITY LIGHT AT GALLEY G5 FOUND CRACKED REF NON-ROUTINE NO.9426061. REPLACED G5 GALLEY LT FWD, LT AFT, RT FWD, RT AFT FLOOR PROXIMITY LIGHT. PERFORMED OP TEST OF EMERGENCY LT, FOUND NORMAL REF AMM 33-51-06-00A-720A REV.144.

Source: SDR CALA2021022200215
OTHER · 2021-02-22 Matched by certificate designator
ATA 3350

Part: LIGHT — CRACKED (GALLEY G9B) · airframe 25,792 hrs · 2,423 cycles

THE RIGHT FLOOR PROXIMITY LIGHT AT DOOR 3 GALLEY G9B FOUND CRACKED REF NON-ROUTINE NO.9426065. REPLACED DOOR 3 G9B GALLEY RT 2 EA FLOOR PROXIMITY LIGHT. PERFORMED OP TEST OF EMERGENCY LT FOUND NORMAL REF AMM 33-51-06- 00A-720A REV.144.

Source: SDR CALA2021022200214
OTHER · 2021-02-22 Matched by certificate designator
ATA 3350

Part: LIGHT — CRACKED (G4 GALLEY) · airframe 25,792 hrs · 2,423 cycles

THE LEFT FWD, RIGHT FWD AND RIGHT AFT FLOOR PROXIMITY LIGHT AT GALLEY G4 FOUND CRACKED REF NON-ROUTINE NO.9426060 - ORIGINATED BY, SPEC NR.B787-33-3-0002. REPLACED G4 GALLEY LT FWD, RT FWD, RT AFT FLOOR PROXIMITY LIGHT, PERFORMED OP TEST OF EMERGENCY LT, FOUND NORMAL REF AMM 33-51- 06-00A-720A REV.144.

Source: SDR CALA2021022200212
OTHER · 2021-02-22 Matched by certificate designator
ATA 3350

Part: LIGHT — CRACKED (DOOR 3 GALLEY) · airframe 25,792 hrs · 2,423 cycles

THE LEFT AND RIGHT FLOOR PROXIMITY LIGHT AT DOOR 3 GALLEY G9A FND CRACKED REF NON-ROUTINE NO.9426066. REPLACED DOOR 3 GALLEY G9A LT AND RT TOTAL 4 EA FLOOR PROXIMITY LIGHT. PERFORMED OP TEST OF EMERGENCY LT, FOUND NORMAL REF AMM 33 -51-06-00A-720A REV.144.

Source: SDR CALA2021022200213

2020

OTHER · 2020-10-29 Matched by certificate designator
ATA 5610

Part: WINDSHIELD — DAMAGED (COCKPIT) · airframe 24,672 hrs · 2,290 cycles

WINDOW HEAT RT FWD ADVISORY LOSS OF RIGHT FORWARD WINDOW HEAT (PRIMARY). FIM TASK REF: 31-90-F8-01A-421B-A CMC MESSAGE 3032413. FLIGHT STATUS: LT INTERMITTENCE CODE: M PH: CRUISE NARRATIVE: 24 PDHM OPS (GPM L8) CMC MESSAGE 3032413 FLIGHT STATUS: LT INTERMITTENCE CODE: M PH: CRUISE NARRATIVE: 24 PDHM OPS (GPM L8) CMC MESSAGE 3032413 FLIGHT STATUS: LT INTERMITTENCE CODE: M PH: CRUISE NARRATIVE: REF B787 MM TASK DMC-B787-A-56-11-01-00A-52A-A STARTED REMOVAL OF FO'S WINDSHIELD. WINDOW IS DISCONNECTED AND READY TO BE REMOVED FROM WINDOW FRAME. REMOVED DAMAGED WINDOW. STARTED WINDOW INSTALLATION, REF DMC-B787-A-56-11-01-00A-720A-A, STOPPED AT STEP 4E, INSTALLED BOLTS LOOSELY ON TOP SIL. ROTABLE PARTS CHANGE WAS INDICATED-TT NR 1067244 SN OFF 1246 WINDSHIELD, NR 1 OFF 78-5610-9-9002 1246 ON 79-5611-9-0002 4168. REPLACED RIGHT FWD WINDSHIELD, REF DMC-B787-A-56-11-01-00A-520A-A, HEAT TEST PASS. ROTABLE PARTS CHANGE WAS INDICATED-TT NR 1212125 SN OFF 4168 WINDSHIELD, ASSEMBLY OFF 79-5611-9-0002 4168 ON 79-5611-9-0002 3250, REF AMM FLIGHT COMPARTMENT NR 1 WINDOW-INSTALLATION, REFERENCE: DMC-B787-A-56-11-01-00A-720A-A.

Source: SDR CALA2020103001226

2018

VIBRATION/BUFFET · 2018-11-29 Matched by certificate designator
ATA 7200

Part: ENGINE — VIBRATION (LEFT) · airframe 15,846 hrs · 1,477 cycles

LEFT ENG HIGH VIBRATION 7.0. OPERATED AT 66 N1 VIB 2.0. REVIEW OF CMC NIL EXCEEDANCES RECORDED REF CREW REPORT AIRCAFT WAS OPERATING IN ICING CONDITIONS. REF.FTD 71-13002. NIL MSG NOTED HI VIBRATION NOTED. INSPECTION CARRIED OUT AS PER AMM G71-00-00-3A-280A NIL DEFECTS NOTED ENGINE GRD RUN CARRIED OUT L & R ENGINES ALL PARAMETERS AND INDICATIONS NORMAL NIL VIBRATION.

Source: SDR CALA2018120202463

2017

OTHER · 2017-12-28 Matched by certificate designator
ATA 2560

Part: BATTERY — FAULTY (FLASHLIGHT) · airframe 11,399 hrs · 1,077 cycles

FIRST OFFICER'S EMERGENCY FLASHLIGHT INOPERATIVE. REMOVED AND REPLACED THE BATTERY. OPS CHECKED GOOD.

Source: SDR CALA2017122804633
NO TEST · 2017-08-08 Matched by certificate designator
ATA 3350

Part: CONTROL UNIT — FAULTY (EMERGENCY LIGHTS) · airframe 9,501 hrs · 910 cycles

DURING EMERGENCY LIGHT TEST, FOUND FLOOR LIGHTING AT ROWS 1 & 2 INOPERATIVE. R & R WCU AT SEAT 1F, OPS CHECKED GOOD. WORK IAW AMM 33-51-00-00C-320A.

Source: SDR CALA2017080802554