# Service difficulty reports: N27901

A list on [N27901](https://openairdocs.org/aircraft/N27901.md).

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first.

- [SDR CALA2026100620167](https://openairdocs.org/sdr/CALA2026100620167.md): Light Sys · faulted · Oct 2, 2026 · N27901 · Boeing 7878 · Emergency Lighting
  > DURING SAFA INSPECTION FND BOTH SIDE OF EMERGENCY ESCAPE PATH AT ROWS 48-52 INOPERATIVE. SYSTEM RESET AND OPS TEST PERFORMED IAW AMM DMC-B787-A-33-51-00-00C-320A-A SATIS ACFT OK FOR SERVICE.
- [SDR CALA2026070217532](https://openairdocs.org/sdr/CALA2026070217532.md): Seal · damaged · Jul 1, 2026 · N27901 · Boeing 7878 · Flight Compartment Windows
  > F/O WINDSHIED MADE POPPI G CRACKILN NOISE IN CLIMB PILOTS REPORT THAT NOISE STARTED AT 8000 FEET AND GOT LOUDER DURING CLIMB AT FO WINDSHIELD. NOISE NOTED AT 1 TO 2 O'CLOCK POSITION. AT 25,000 FT PILOTS DROPPED ALTITUDE, NOISE WAS INTERMITTANT MORE AS ALTITUDE
- [SDR CALA2026060116663](https://openairdocs.org/sdr/CALA2026060116663.md): Unknown · odor · May 28, 2026 · N27901 · Boeing 7878 · Air Distribution System
  > FLIGHT DECK HAS STRONG ODOR. PERSISTENT THROUGHOUT ENTIRE FLIGHT. REQUIRES A DEEP CLEAN. SOURCE OF ODOR UNKNOWN. CREW REPORTED FOULD SMELL NOT SMOKE OR ELECTRICAL RELATED. CREW NOTIFIED CLEANERS
- [SDR CALA2026033114986](https://openairdocs.org/sdr/CALA2026033114986.md): Transceiver · faulted · Mar 28, 2026 · N27901 · Boeing 7878 · HF Communications System
  > LEFT HF RADIO TRANSMISSION PROBLEM. LEFT HF RADIO DOES NOT TRANSMIT LOOKING AT TIMELINE OF FAULTS BOTH 23-11071 AND 23-11082 HAVE OCCURED LAST 3 OF 4 FLIGHT LEGS WITH 23-11071 OCCURING MINUTES BEFORE SECOND FAULT SUGGEST LEFT HF COUPLER MAY BE AT FAULT. REF FI
- [SDR CALA2026030414309](https://openairdocs.org/sdr/CALA2026030414309.md): Girt Bar · faulted · Mar 4, 2026 · N27901 · Boeing 7878 · Emergency Equipment
  > DR 2L HAD FLASHING LT FOR 7 MINS AFTER ALL OTH ER DORS WERE MANU AL. FOUND FWD GIRT BAR FITTING NOT SPRINGING BACK, CLEANED GUARD, ARM/DISARM FUNCTION NOW CKS OK WITH NO FLASNING LIGHTS WHEN ARMING DOOR, REF FIM 52-10-F1-AAA-421A-A.
- [SDR CALA2026012813399](https://openairdocs.org/sdr/CALA2026012813399.md): Oven · odor · Jan 25, 2026 · N27901 · Boeing 7878 · Buffet/Galleys
  > FWD GALLEY OVEN 108 HAS STONG BURNING ODOR WHEN USED. RESET THE OVEN CIRCUIT BREAKER, OVEN 108 OPS CHECKED GOOD IAW AMM 25-32-00
- [SDR CALA2026012313182](https://openairdocs.org/sdr/CALA2026012313182.md): Switch · out of position · Jan 21, 2026 · N27901 · Boeing 7878 · Emergency Lighting
  > EMERGENCY LIGHTS ADVISORY FLIGHT DECK EMERGENCY LIGHT SWITCH IS NOT IN THE ARMED POSITION, OR SWITCH IS IN ARMED POSITION AND FLIGHT ATTENDANT EMERGENCY L IGHT SWITCH SELECTED ON, OR THE SYSTEM CONTROLS ARE IN THE ARMED STATE AND THE 115 VAC TO AT LEAST ONE OF
- [SDR CALA2025072806975](https://openairdocs.org/sdr/CALA2025072806975.md): Fmu · faulted · Jul 26, 2025 · N27901 · Boeing 7878 · Engine Fuel and Control
  > LEFT ENG EXCEEDENCE FOLLOWED BY FAILURE ON CLIMB, LEFT ENGINE BECAME UNCONTROLLABLE AND SPOOLED UP APROX AT 5K FT DURING CLIMB. FOUND ASSOCIATED MAINTENANCE MESSAGES 73-32671, 73-09603, 73-33931, 77-11411, 76-39351, 73-32901. PERFORMED FIM G73-20-F1-J3A-421A-
- [SDR CALA2025070306191](https://openairdocs.org/sdr/CALA2025070306191.md): Handle · worn · Jul 2, 2025 · N27901 · Boeing 7878 · Passenger/Crew Doors
  > DOOR ENTRY 4R EICAS MESSAGE. 1 MIN BEFORE LDG DOOR HNDL RAISED UPLOCKING UNLOCK LOCKING UNLOCKING. DOOR 4R PASSENGER ENTRY DOOR HANDLE CAM GAS SPRING REMOVED AND REPLACED IAW AMM DMC-B787-A-52-11-05-00A-720A-A UP TO STEP/PARAGRAPH C.
- [SDR CALA2025070306181](https://openairdocs.org/sdr/CALA2025070306181.md): Slide · no discrepancy · Jul 1, 2025 · N27901 · Boeing 7878 · Escape Slide
  > DOOR 4R SLIDE PACK REMOVED FOR ACCESS IAW DMC-B787-A-25-66-01-01B-520A-A. RENDER SAFE CHECKLIST FOR DAY ONE 1ST JULY 2025. DOOR 4R SLIDE PACK INSTALLED IAW DMC-B787-A-25-66-01-01B-720A-A. EVACUATION SLIDE RII COMPLETED REF GMM 09-25-05. INSPECTION VISUAL CHEC
- [SDR CALA2025063006038](https://openairdocs.org/sdr/CALA2025063006038.md): Light · faulted · Jun 26, 2025 · N27901 · Boeing 7878 · Emergency Lighting
  > INSEAT EMERGENCY PATH LIGHT INOP AT 30F FLOOR PROX LIGHT INOP AT SEAT 30F INOP PLACARDS INSTALLED OK TO DEF INSEAT EMERGENCY PATH LIGHT INOP AT 30F COMPLIED WITH MEL REPLACED FLOOR PROXIMITY LIGHT AT SEAT 30F. OPS CK NORMAL. REF AMM 33-51-06.
- [SDR CALA2025062305788](https://openairdocs.org/sdr/CALA2025062305788.md): Power Supply · faulted · Jun 19, 2025 · N27901 · Boeing 7878 · Landing Gear Brake System
  > BRAKES ADVISORY FAULT IS DETECTED IN THE BRAKE SYSTEM THAT REDUC ES BRAKING CAPABILITY BY TWO OR MORE BRAKES OR APPLIES AN UNCOM MANDED CLAMPING F ORCE TO ANY BRAKE WHILE ON THE GROUND. FIM TAS K REF: 31-90-F8-01A-421B-A CMC MSG# 3245904. WHEEL 8 ELECTRI C BR
- [SDR CALA2025022002401](https://openairdocs.org/sdr/CALA2025022002401.md): Circuit Breaker · tripped · Feb 19, 2025 · N27901 · Boeing 7878 · Heating System
  > CT ELECTRICAL BURNING NOTICED HEATER-CAPT SHOULDER CB IS TRIP PED SMOKE ODOR FORM AND CONDITIONAL INSPECTION NEEDS ACCOMPLISHED. MX HAS C/W INSP OF THE HEATER AND DUCT AREA, CONFIRMED HEATER DISCOLORED EVERYTHING THING ELSE VISUALLY LOOKS GOOD. WILL APPLY ME
- [SDR CALA2025010301773](https://openairdocs.org/sdr/CALA2025010301773.md): Bustle · cracked · Jan 1, 2025 · N27901 · Boeing 7878 · Escape Slide
  > WIND BLEW DOOR 1L SLIDE BUSSEL OFF FOUND A CRACK IN THE FWD UPPER CORNER OF THE BUSTLE AND FOUND ALL OF THE INSERTS FOR THE TRIM PIECE TO BE RIPPED OUT. NEW BUSTLE AND PLACARDS ON AOG. REF DMC-B787-A-52-11-24-03A-720A-A FOR INSTILLATION REPLACED DOOR 1L SLIDE
- [SDR CALA2024022300513](https://openairdocs.org/sdr/CALA2024022300513.md): Battery · faulted · Feb 23, 2024 · N27901 · Boeing 7878 · Emergency Lighting
  > EXISTING FAULT MESSAGE 33-11302 DR1 RH REMOTE WELS CONTROL UNIT BATTERY POWER IS DEGRADED REFER HAECO NON-ROUTINE NO.9476482,,PERFORMED TROUBLE SHOOTING FOUND THE BA TTERY UNIT FAILED REPLACED THE BATTERY UNIT AND CARRIED OUT INST ALLATION TEST TEST RESULT F
- [SDR CALA2024022300512](https://openairdocs.org/sdr/CALA2024022300512.md): Controller · malfunctioned · Feb 19, 2024 · N27901 · Boeing 7878 · Emergency Lighting
  > PLEASE CHECK FOR WELS FAULT M3351WG04 WCU CLASS26 LOCATED UNDER SEAT 39D REFER HAECO NON-ROUTINE NO.9478972, PERFORMED THE TROUBLE SHOOTING AND WIRI. NG CHECK FOUND THE WCU FAILED REPLACED THE WCU AND CARRIED OUT I NSTALLATION TEST THE TEST RESULT FOUND NORMA
- [SDR CALA2023121803665](https://openairdocs.org/sdr/CALA2023121803665.md): Light · missing · Dec 13, 2023 · N27901 · Boeing 7878 · Emergency Lighting
  > FLOOR (WHITE CIRCULAR) PROXIMITY LIGHT MISSING AT SEAT 1D. ACCOMPLISHED GMM 09-10-05 OF INSTALL OPERATION AND CORRECT PN FOR LH ELS PROX PATH LIGHTS AT SEAT 1D. INSTALLED NEW PROXIMITY LIGHT REF AMM 33-51-06, OPS CHECK GOOD. FLAGING AS IDT. IDT ITEM, REQUIRES
- [SDR CALA2023121803664](https://openairdocs.org/sdr/CALA2023121803664.md): Light · missing · Dec 13, 2023 · N27901 · Boeing 7878 · Emergency Lighting
  > FLOOR (WHITE CIRCULAR) PROXIMITY LIGHT MISSING AT SEAT 2D. ACCOMPLISHED GMM 09-10-05 OF INSTALL AND CORRECT PN FOR LH ELS PROX PATH LIGHTS AT SEAT 2D. INSTALLED NEW PROXIMITY LIGHT REF AMM 33-51-06, OPS CHECK GOOD. FLAGING AS IDT. IDT ITEM, REQUIRES INSPECTION
- [SDR CALA2023091302774](https://openairdocs.org/sdr/CALA2023091302774.md): Pump · faulty · Sep 10, 2023 · N27901 · Boeing 7878 · Indicating/Recording System
  > LIQUID COOLING R CAUTION PECS LOOP R IS NOT OPERATIONAL. FIM TASK REF: 31-90-F8-01A-421B-A CMC MSG# 2181055 FLIGHT STATUS: L INTERMITTENCE CODE: M PH: CRUISE NARRATIVE: 21 PECS OPS (1). DEACTIVATED RIGHT PECS PUMP 1 REF DDG21-58-05 COMPLIED WITH MEL AS REQU
- [SDR CALA2023060901793](https://openairdocs.org/sdr/CALA2023060901793.md): Filter Element · warning message · Jun 7, 2023 · N27901 · Boeing 7878 · Engine (Turbine/Turboprop)
  > ENG FUEL FILTER R EICAS ADVISORY THE FUEL FILTER IS APPROACHING OR AT A FILTER BYPASSING CONDITIO N. DIFFERENTIAL PRESSURE TRANSDUCER MEASUREMENT FOR THE RIGHT E NGINE FUEL FILTER IS ABOVE THE IMPENDING BYPASS OR THE BYPASS LI MIT. THE CONFIRMATION TIMER FOR
- [SDR CALA2021041600469](https://openairdocs.org/sdr/CALA2021041600469.md): Battery Pack · faulted · Apr 14, 2021 · N27901 · Boeing 7878 · Emergency Lighting
  > FOUND CMCF EXISTING FAULT MESSAGE APPEARED 33-12120; 33-12129 - REF HAECO NON-ROUTINE NO.9435766, EA 4400-01109 REV.A OP001. THE NO.20 WBU REP LACED AND PERFORMED INSTALLATION TEST. THE RESULT FOUND NORMAL. THE CMCF FAULT MESSAGE DISAPPEARED REFER AMM 33-51-
- [SDR CALA2021041400466](https://openairdocs.org/sdr/CALA2021041400466.md): Bracket · cracked · Apr 14, 2021 · N27901 · Boeing 7878 · Wing, Attach Fittings
  > R/H WING T/E CAVITY REAR SPAR BELOW NO.9 SPOILER BRACKET FND CRA CK - REF HAECO NON-ROUTINE NO.9430770, ORIGINATED BY EMP V943077 0, SPEC NO.B787-06-3-0073 PERFORMED BY EMP V902987, RII BY HAECO TA511 - R/H WING T/E CAVI TY REAR SPAR BELOW NO.9 SPOILER RIB REP
- [SDR CALA2021041400465](https://openairdocs.org/sdr/CALA2021041400465.md): Bracket · cracked · Apr 14, 2021 · N27901 · Boeing 7878 · Wing, Attach Fittings
  > L/H WING T/E CAVITY REAR SPAR BELOW NO.6 SPOILER BRACKET FND CRA CK - REF HAECO NON-ROUTINE NO.9430768, ORIGINATED BY EMP V902987, SPEC NO.B787-06-3-0055 PERFORMED BY EMP V902987, RII BY HAECO TA511 - L/H WING T/E CAVI TY REAR SPAR BELOW NO.6 SPOILER RIB REPA
- [SDR CALA2021041400462](https://openairdocs.org/sdr/CALA2021041400462.md): Bracket · cracked · Apr 13, 2021 · N27901 · Boeing 7878 · Spoilers
  > R/H WING T/E CAVITY REAR SPAR BELOW NO.9 SPOILER BRACKET FOUND CRACKED - REF HAECO NON-ROUTINE NO.9430770,, SPEC NO.B787-06-3-0073. R/H WING T/E CAVI TY REAR SPAR BELOW NO.9 SPOILER RIB REPAIRED AS PER ECRA 5751-01 384 REV.
- [SDR CALA2021041400461](https://openairdocs.org/sdr/CALA2021041400461.md): Rib · cracked · Apr 13, 2021 · N27901 · Boeing 7878 · Spoilers
  > L/H WING T/E CAVITY REAR SPAR BELOW NO.6 SPOILER BRACKET FOUND CRACKED - REF HAECO NON-ROUTINE NO.9430768, SPEC NO.B787-06-3-0055. LT WING T/E CAVI TY REAR SPAR BELOW NO.6 SPOILER RIB REPAIRED AS PER EC/RA 5751-0 1383 REV.-
- [SDR CALA2021040600436](https://openairdocs.org/sdr/CALA2021040600436.md): Skin · scratched · Apr 6, 2021 · N27901 · Boeing 7878 · Fuselage Main, Plate/Skin
  > THE FUS STA620 S29R-S30R AREA FND SCRATCH MARK. AREA REPAIRED AS PER SRM B787-A-53-30-01-07A-664A-A AND B787 -A-51-73-04-19A-663A-A REV.43.
- [SDR CALA2021040600433](https://openairdocs.org/sdr/CALA2021040600433.md): Skin · scratched · Apr 6, 2021 · N27901 · Boeing 7878 · Fuselage Main, Plate/Skin
  > THE FUS STA620 S29R-S30R AREA FND SCRATCH MARK - REF HAECO NON-R OUTINE NO.9431422, SPEC NO.B787-06-3- 0036. FUS STA620 S29R-S 30R AREA REPAIRED AS PER SRM B787-A-53-30-01-07A-664A-A AND B787 -A-51-73-04-19A-663A-A REV.43.
- [SDR CALA2021020500131](https://openairdocs.org/sdr/CALA2021020500131.md): Control Unit · inoperative · Feb 5, 2021 · N27901 · Boeing 7878 · Landing Gear Brake System
  > BRAKE CONTROLS ADVISORY FAULT IN THE BRAKE SYSTEM CAUSING UNCOMMANDED APPLICATION OF ANY BRAKE, OR BRAKE LOSS TO MORE THAN ONE BRAKE PER TRUCK. FIM TASK REF: 31-90-F8-01A-421B-A CMC MSG# 4201060 FLIGHT STATUS: A INTERMITTENCE CODE: H PH: CRUISE
- [SDR CALA2018022100720](https://openairdocs.org/sdr/CALA2018022100720.md): Battery Pack · inoperative · Feb 21, 2018 · N27901 · Boeing 7878 · Emergency Lighting
  > WHILE TROUBLESHOOTING THE EMERGENCY LIGHT INBOUND AHM ITEM, FOUND THE L2 DOOR EMERGENCY LIGHTS INOPERATIVE. REPLACED BOTH CONTROL UNIT BATTERIES IAW MM 33-51-07-02B-720A-A, OPS NORMAL.
- [SDR CALA2018020900508](https://openairdocs.org/sdr/CALA2018020900508.md): Battery · failed · Feb 9, 2018 · N27901 · Boeing 7878 · Emergency Lighting
  > FWD CABIN WIRELESS EMERGENCY LIGHT REMOTE CONTROL UNIT BATTERY POWER FAILED, MESSAGE 33-11409. REPLACED THE WIRELESS EMERGENCY LIGHT REMOTE CONTROL AND BATTERY IAW AMM 33-50-F1-76A.
- [SDR CALA2017100603506](https://openairdocs.org/sdr/CALA2017100603506.md): Pawl · dirty · Oct 6, 2017 · N27901 · Boeing 7878 · Emergency Equipment
  > L4 DOOR SLIDE WONT ARM. FOUND THE AFT PAWL GIRT BAR FLOOR FITTING DIRTY. CLEANED IAW FIM DMC-B787-A-52-11-18-01B-258A-A, PAWL FITTING WORKED FINE. DOOR SLIDE ARMS NORMAL.
- [SDR CALA2017091503182](https://openairdocs.org/sdr/CALA2017091503182.md): Cover · damaged · Sep 15, 2017 · N27901 · Boeing 7878 · Emergency Lighting
  > SEATS 2E AND 1D EMERGENCY LIGHT, COVER IS DAMAGE. REMOVED AND REPLACED EMERGENCY LIGHT AT SEATS 2E AND 1 D IAW AMM 33-51-06-00A-520A-A.
- [SDR CALA2017082502874](https://openairdocs.org/sdr/CALA2017082502874.md): Guard · out of adjust · Aug 25, 2017 · N27901 · Boeing 7878 · Emergency Lighting
  > EMERGENCY LIGHTS ADVISORY FLIGHT DECK EMERGENCY LIGHT SWITCH IS NOT IN THE ARMED POSITION, OR SWITCH IS IN ARMED POSITION. GUARD TURNS SWITCH FROM ARMED TO OFF WHEN CLOSED, ADJUSTED WIRE LOOP FOR SWITCH. OPS CHECKED NORMAL
- [SDR CALA2017062301945](https://openairdocs.org/sdr/CALA2017062301945.md): Light · missing · Jun 23, 2017 · N27901 · Boeing 7878 · Emergency Lighting
  > SEAT 3E FWD EMERGENCY LIGHT ASSY MISSING. REPLACED SEAT 3E EMERGENCY LIGHT ASSY, OPS CHECKED GOOD.
- [SDR CALA2017010900046](https://openairdocs.org/sdr/CALA2017010900046.md): Flashlight · inoperative · Jan 9, 2017 · N27901 · Boeing 7878 · Emergency Equipment
  > EMERGENCY FLASHLIGHT AT 2R FWD NOT WORK PROPERLY. TEST INDICATION IS RED TRANSFERRED FOR DEFERRAL. 2R FWD EMERGENCY FLASHLIGHT AS INOP IAW MEL 2564B. PLACARDED INOP. EMERGENCY FLASHLIGHT AT 2R DOOR FWR TEST PFMD IAW DMC-B787-A-25 -6400-04B-320A-A TEST PASSED A
- [SDR CALA2015111300915](https://openairdocs.org/sdr/CALA2015111300915.md): Light · inoperative · Nov 11, 2015 · N27901 · Boeing 7878 · Emergency Lighting
  > AFT GALLEY COMPARTMENT 901 LT EMER LIGHT DOES NOT ILLUMINATE AFT GALLEY COMPARTMENT 901 LT EMER LIGHT REPLACED & OPERATION TEST RESULT NORMAL IAW AMM 33-51-06.
- [SDR CALA2015102100859](https://openairdocs.org/sdr/CALA2015102100859.md): Tire · flat · Oct 20, 2015 · N27901 · Boeing 7878 · Tire
  > ACFT DECLARED EMER LANDING DUE TO TIRE PRESS SHOWS 0 PSI AT TIRE NR 7. AFTER LANDING & GATE INTO NR 12 BY TAXI, FOUND NR 7 TIRE WAS FLAT. R & R NR 7 & 8 TIRES IAW AMM DMC-B787-A-32-45-01-00A-520A-A. NO AREA DAMAGE FOUND.
- [SDR CALA2013092600697](https://openairdocs.org/sdr/CALA2013092600697.md): Control Module · faulty · Sep 24, 2013 · N27901 · Boeing 7878 · Trailing Edge Flap Control System
  > EICAS MESSAGE "FLAPS DRIVE " CAME ON AT CRUSE ALTITUDE OF 40,000'', MACH.855 SPEED, SLOWED DOWN TO.77. COMPLETED "FLAPS DRIVE" CHECK LIST. FOUND FCM CHANNEL STATUS MESSAGE NOT ACTIVE. R & R LT FCM FOR PRECAUTIONARY IAW AMM B787-A-27-02-18-00A-520A-A/ 720A

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE n_number = 'N27901' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N27901/reports

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