# Service difficulty reports: N27477 A list on [N27477](https://openairdocs.org/aircraft/N27477.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR CALA2026041415363](https://openairdocs.org/sdr/CALA2026041415363.md): Oven · odor · Apr 13, 2026 · N27477 · Boeing 737924ER · Buffet/Galleys > OVEN 204 SMELLED LIKE BURNING RUBBER WITH SMOKE. BOTH STOPPED ONCE POWER WAS REMOVED REQUEST DEFERRAL APPLIED NEF 2510AU. DDP COMPLIED WITH. REF LP 8544978 FOR CONDITIONAL INSP PERFORMED FOR SMOKE. REMOVED AND REPLACED OVEN 204 IN REF TO AMM 25-34-00. OPS CHEC - [SDR CALA2025122912496](https://openairdocs.org/sdr/CALA2025122912496.md): Power Supply · inoperative · Dec 27, 2025 · N27477 · Boeing 737924ER · Emergency Lighting > RIGHT FORWARD OVERWIND EXIT SIGN INOPERATIVE. R & R M1695 POWER SUPPLY ASSEMBLY. RIGHT OVERWING EXIT LIGHTS OPS CHECKS NORMAL. IW WDM 33-51-13-7,.AMM 33-51-06-960-806. - [SDR CALA2025111811316](https://openairdocs.org/sdr/CALA2025111811316.md): Wire · pulled · Nov 17, 2025 · N27477 · Boeing 737924ER · Light System Wiring > OPERATIONAL CHECK OF EMERGENCY LIGHTS, ROW 10, PROXIMITY LIGHT INOPERATIVE. FOUND THREE WIRES BETWEEN TWO CONNECTORS THAT HAD PULLED LOOSE. REPINNED WIRES AND RESECURED CONTACTORS IAW SWPM 20-42-01. OPS GOOD. - [SDR CALA2025102910712](https://openairdocs.org/sdr/CALA2025102910712.md): Light · broken · Oct 28, 2025 · N27477 · Boeing 737924ER · Emergency Lighting > EMERGENCY LIGHT AT SEAT 28 C, BROKEN. REMOVED AND REPLACED THE EMERGENCY LIGHT. OPS CHECKED GOOD IAW AMM 33-51-11-960-802 - [SDR CALA2025082908280](https://openairdocs.org/sdr/CALA2025082908280.md): Battery Pack · inoperative · Aug 27, 2025 · N27477 · Boeing 737924ER · Emergency Lighting > EMERGENCY EXIT LIGHTS OUT ROWS 9-14 TROUBLESHOT IAW WDM 33-51-21-7. REPLACED THE M2503 BATTERY PACK AND POWER SUPPLY IAW AMM 33-51-06-960-805. OPS CHECKED GOOD. - [SDR CALA2025062706011](https://openairdocs.org/sdr/CALA2025062706011.md): Director · faulted · Jun 25, 2025 · N27477 · Boeing 737924ER · Flight Environment Data > STBY ATTITUDE INDIC OSCILLATING BETWEEN 10 DEGREES AND 30 DEGREE NOSE UP AND30 DEGREES REMOVED ISFD UNIT REFMM 34-24-02 FOR IDENTIFICATION,PULLED 3 TOTAL CBS 2 ON P6-3 AND 1 ON ISFD BATTERY IN E & E COMPARTMENT PER MM 34-24-02 REPLACED ISFD AMM 34-24-02, ALL F - [SDR CALA2025061905711](https://openairdocs.org/sdr/CALA2025061905711.md): Battery Pack · faulted · Jun 18, 2025 · N27477 · Boeing 737924ER · Emergency Lighting > EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK {B737-33-3-0235} - ROW 8ABC THROUGH 14ABC EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY AND BATTERY PACK. OPS. CK. GOOD. REF AMM- 33-51-06-960-806 AND AMM- 33-51-06-960-805. LOCATION OF POWER SUPPLY AND BATTE - [SDR CALA2025061205486](https://openairdocs.org/sdr/CALA2025061205486.md): Bottle · no discrepancy · Jun 8, 2025 · N27477 · Boeing 737924ER · Standard Practices/Structures > DOOR L1 SLIDE PRESSURE APPEARS LOW DOOR L1 SLIDE CONFIRMED WITHIN LIMIT. - [SDR CALA2025042104068](https://openairdocs.org/sdr/CALA2025042104068.md): Slide · no discrepancy · Apr 17, 2025 · N27477 · Boeing 737924ER · Escape Slide > SLIDE AT 2L COMING OUT. INSPECTED SLIDE PACK AND VERIFIED TO BE INSTALLED CORRECTLY IN REF TO AMM 25-66-01. NO MX ACTION IS REQUIRED - [SDR CALA2024103002751](https://openairdocs.org/sdr/CALA2024103002751.md): Elec Connector · damaged · Oct 28, 2024 · N27477 · Boeing 737924ER · Light System Wiring > ROW 27CBA AND ROW 28CBA EMERGENCY PATH LIGHT INOP REMOVED AND REPLACED BROKEN CONNECTOR UNDER SEAT ROW 27CBA AND 28CBA TO EMERGENCY AISLE LIGHT IAW SWPM 20 -42- 01 OPS CHECK GOOD IAW AMM 33-51-11-710-002.PARTS USED: 00-0366-3-0461,QTY:1 - [SDR CALA2024103002750](https://openairdocs.org/sdr/CALA2024103002750.md): Elec Connector · damaged · Oct 28, 2024 · N27477 · Boeing 737924ER · Light System Wiring > ROW 27CBA AND ROW 28CBA EMERGENCY PATH LIGHT INOP REMOVED AND REPLACED BROKEN CONNECTOR UNDER SEAT ROW 27CBA AND 28CBA TO EMERGENCY AISLE LIGHT IAW SWPM 20 -42- 01 OPS CHECK GOOD IAW AMM 33-51-11-710-002.PARTS USED: 00-0366-3-0461,QTY:1 - [SDR CALA2024101000808](https://openairdocs.org/sdr/CALA2024101000808.md): Cotter Pin · missing · Oct 9, 2024 · N27477 · Boeing 737924ER · Service Doors > TECH SUPPORT UPDATE ON CHRONIC R1 DOOR EXTERNAL HANDLE NOT STOWING OR COMING UNSTOWED IN FLIGHT PLZ INSP OUTER DOOR HANDLE ASSY AS THERE IS A RETURN SPRING THAT KEEPS THE HANDLE STOWED REF IPC 52-11-51-05A FIG 50 CHECK FOR WEAK OR BROKEN SPRING THX. ALSO REF A - [SDR CALA2021091501585](https://openairdocs.org/sdr/CALA2021091501585.md): Control Unit · unlatched · Sep 15, 2021 · N27477 · Boeing 737924ER · Brake Anti-Skid Section > ANTI SKID INOP LIGHT ILLUMINATED ON ARRIVAL FOUND AACU COMPUTER NOT LATCHED AT ALL AND WAS NOT ALL THE WAY IN. RESECURED THE BOX AND ACCOMPLISHED BITE PER 32-42 TASK 801. CHK OK AND NO LIGHTS ILLUMINATED IN THE FLIGHT DECK. - [SDR CALA2019070801150](https://openairdocs.org/sdr/CALA2019070801150.md): Control Cable · out of position · Jun 29, 2019 · N27477 · Boeing 737924ER · Stabilizer Control System > HSTA B CABLE AT STATION 1040 MISSED AFT PULLEY AND HAS WORN/CUT INTO FLOORBEAM AT APPROX 0.315 INCH IN LENGTH. REPAIRED DAMAGED FLOORBEAM PER ECRA 5380-01257 REV A ALL WORK ACCOMPLISHED ON FLEETCYCLE 9677460. - [SDR CALA2018030600857](https://openairdocs.org/sdr/CALA2018030600857.md): Transmitter · malfunctioned · Mar 5, 2018 · N27477 · Boeing 737924ER · Trailing Edge Flap Control System > FLAPS STUCK AT 5. HAD TO ALT EXTEND FLAPS TO 15 FOR LANDING. PREFORMED A BITE CHECK OF FSEU, FOUND FAULT 27-52259. TROUBLESHOT IAW FIM 27-51-00-810-813. FOUND THE LEFT FLAP TRANSMITTER AT FAULT. REMOVED & REPLACED THE LEFT FLAP POSITION TRANSMITTER IAW MM - [SDR CALA2018022500814](https://openairdocs.org/sdr/CALA2018022500814.md): Lens · missing · Feb 25, 2018 · N27477 · Boeing 737924ER · Emergency Lighting > SEAT 20C EMERG LT BULB MISSING. REPLACED RED LENS COVER. - [SDR CALA2018020200455](https://openairdocs.org/sdr/CALA2018020200455.md): Lens · missing · Feb 2, 2018 · N27477 · Boeing 737924ER · Emergency Lighting > EMERGENCY LIGHT LENS AT FWD COAT CLOSET DAMAGED. SMALL LENS MISSING, LIGHT WORKS. INSTALLED LENS. - [SDR CALA2017111204040](https://openairdocs.org/sdr/CALA2017111204040.md): Pump · failed · Nov 12, 2017 · N27477 · Boeing 737924ER · Hydraulic Pump (Electric/Engine), Main > LOST HYDRAULIC B QTY AND PRESSURE. EMERGENCY DECLARED. FOUND THE NR 2 ENGINE ED PUMP HAD GONE BAD, B SYSTEM HYDRAULIC RESERVOIR EMPTY, FLUID EXPELLED THROUGH THE ENGINE DRIVEN PUMP DRIVE PAD DRAIN INTO COWLING. REMOVED AND REPLACED THE PUMP, FOUND THE SH ## 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 = 'N27477' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N27477/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.