# Service difficulty reports: N77538 A list on [N77538](https://openairdocs.org/aircraft/N77538.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR CALA2026100820232](https://openairdocs.org/sdr/CALA2026100820232.md): Controller · faulted · Oct 5, 2026 · N77538 · Boeing 737824 · Cabin Pressure Controller > CABIN PRESSURE DIFF IS ABOVE LIMITS, DESCENDED FROM FL 390 TO 350. REMOVED AND REPLACED CPC NR 2 IAW AMM 21-31-01, OPS CHKD GOOD. INSPECTED BOTH PACK BAYS FOR LEAKS, NONE NOTED. INSPECTED OUTFLOW VALVE AND OVER PRESSURE VALVES. NO DEFECTS NOTED. - [SDR CALA2026061817168](https://openairdocs.org/sdr/CALA2026061817168.md): Filter · odor · Jun 17, 2026 · N77538 · Boeing 737824 · Air Distribution System > DESCENDING THRU 12000 FT A/C STARTED SMELLING LIKE DIRTY SOCK S PHOTO UPDATE.. CREW INFORMED THAT SMELL DISSAPATED AFTER 5 MINUTES. UPDATED. PARTS. INFORMATION PLEASE REPLACE RECIRC FILTERS UNLOCKING FOR SIGN OFF REMOVED AND REPLACED BOTH LEFT AND RIGHT REC - [SDR CALA2026031614593](https://openairdocs.org/sdr/CALA2026031614593.md): Elec Connector · crushed · Mar 14, 2026 · N77538 · Boeing 737824 · Light System Wiring > EMERGENCY LIGHTS OPERATIONAL CHECK, FWD LT OVERWING EXIT LOWER LED LIGHT DOES NOT ILLUMINATE WITH EMERGENCY LIGHTS WHEN BSI LIGHTS ARE OFF. FOUND CONNECTOR OF D14842 SMASHED. REPINNED AND REPLACED CONNECTOR D14842. OPS CHECK NORMAL IAW AMM 33-51-00-710-801. - [SDR CALA2025102210399](https://openairdocs.org/sdr/CALA2025102210399.md): Outflow Valve · faulted · Oct 22, 2025 · N77538 · Boeing 737824 · Pressure Regulator/Outflow Valve > CABIN ALT WARNING ON DESCENT, CABIN ALT 10/11 THOUSAND FT. COMPLIED WITH CABIN ALT QRC DEFER AUTO 1, BRIEFED OTBND CREW. PERFORMED DCPC BITE CK 1 FAULT REPORTED CODE 017. PULLED & COLLARD PRESSURIZATION CONTROL AUTO 1 CB ON P6-4 PANEL MEL 2114A REJECTING MEL - [SDR CALA2025090808574](https://openairdocs.org/sdr/CALA2025090808574.md): Floorbeam · corroded · Sep 4, 2025 · N77538 · Boeing 737824 · Fuselage Main, Floor Beam > FOUND EXFOLIATED CORROSION AT AFT WET AREA FLOORBEAM AT STA 947 BETWEEN RBL 24.75 AND LBL 24.75.REF AAR N/R 97530076. ACCOMPLISHED REPAIR AT AFT WET AREA FLOORBEAM UPPER CHORD AT STA 947.5 PER ECRA 5370-01190. - [SDR CALA2025090308437](https://openairdocs.org/sdr/CALA2025090308437.md): Angle · cracked · Aug 30, 2025 · N77538 · Boeing 737824 · Fuselage Miscellaneous Structure > LOWER FUS CENTER WING REAR SPAR BULKHD VAPOR BARRIER UPPER ATTACHED ANGLE CRACKED AT LBL 7 STA 663. ACCOMPLISHED CENTER WING REAR SPAR BULKHEAD VAPOR BARRIER ANGLE REPAIR AT LBL 7 STA 663 PER SRM 57-10-10-2R-5 REPAIR 5 AND DRAWING 111A10000. - [SDR CALA2025091508885](https://openairdocs.org/sdr/CALA2025091508885.md): Floor Support · corroded · Aug 26, 2025 · N77538 · Boeing 737824 · Fuselage Miscellaneous Structure > FOUND EXFOLIATED CORROSION AT SUPPORT INTERCOSTAL BS 948 RBL 27.25. REMOVED & REPLACED INTERCOSTAL AT BS 948, RBL 27.25 IAW SRM 51-40-02-0G-0 AND DRAWING 147A5650. - [SDR CALA2025090108304](https://openairdocs.org/sdr/CALA2025090108304.md): Floor Support · corroded · Aug 26, 2025 · N77538 · Boeing 737824 · Fuselage Miscellaneous Structure > FOUND EXFOLIATED CORROSION AT SUPPORT INTERCOSTAL STA 948 LBL 27.25. REMOVED AND INSTALLED NEW INTERCOSTAL AT AFT WET AREA STA 948 LBL 27.25 PER DRAWING 147A5650 AND SRM 51-40-02-0G-0. - [SDR CALA2025090108303](https://openairdocs.org/sdr/CALA2025090108303.md): Rib · cracked · Aug 25, 2025 · N77538 · Boeing 737824 · Horizontal Stabilizer, Spar/Rib > CRACK AT RTGHT HORIZONTAL STABILIZER STA 129.50 INSPAR RIB.FWD TO AFT,3RD STIFFNER LOWER CHORD AREA. REF AAR N/R 97530105. ESFR INFORMATION UPDATED ACCOMPLISHED REPAIR RIGHT HORIZONTAL STABILIZER RIB #5 PER REF SRM 55-10-09-2R-4 REPAIR 4 DETAIL "A" FIG - [SDR CALA2025071406517](https://openairdocs.org/sdr/CALA2025071406517.md): Girt Bar · out of position · Jul 13, 2025 · N77538 · Boeing 737824 · Emergency Equipment > REQUEST DOOR 1R SLIDE INSPECTION. FABRIC HANGING LOW/TOUCHING FLOOR. REPACKED GIRT MATERIAL Z FOLD ON 1R DOOR SLIDE REF AMM 25-66-01. C/W RII REF. GMM 09-25-05. 1R DOOR SLIDE INSTALL IS GOOD REF. AMM 25-66-01. - [SDR CALA2025052104876](https://openairdocs.org/sdr/CALA2025052104876.md): Slide · out of adjust · May 18, 2025 · N77538 · Boeing 737824 · Emergency Equipment > 1R DOOR SLIDE MATERIAL LAYING ON FLOOR REAJUSTED1R DOOR MATERIAL DOOR OPERATES NORMAL OK FOR SERVICE REF AMM 25-66-01 - [SDR CALA2025042804258](https://openairdocs.org/sdr/CALA2025042804258.md): Battery Pack · no test · Apr 25, 2025 · N77538 · Boeing 737824 · Emergency Lighting > EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK {B737-33-3-0235} - FIRST CLASS FLOOR PATH LIGHTING DOES COME ON BUT GOES OUT AFTER APPROXIMATELY 20 SECONDS. THE AIRFRAFT HAS BEEN RUNNING FOR 5 HOURS ON APU POWER. NO IMPROVEMENT IN TEST DURATION. REMOVED & REPLACED - [SDR CALA2025032703237](https://openairdocs.org/sdr/CALA2025032703237.md): Lamp · no test · Mar 25, 2025 · N77538 · Boeing 737824 · Emergency Lighting > EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK {B737-33-3-0235} - 29 C SEAT MOUNTED EMERGENCY LIGHT INOP RELAMPED SEAT 29 C MOUNTED EMERGENCY LIGHT, REF AMM 33-51-11 OPS CK GOOD NO FURTHER DEFECTS NOTED. - [SDR CALA2025012802085](https://openairdocs.org/sdr/CALA2025012802085.md): Oven · odor · Jan 25, 2025 · N77538 · Boeing 737824 · Buffet/Galleys > AFT GALLEY OVEN 423 GAVE OFF A BURNT SMELL AND SOME SMOKE AFTER BEING USED TO WARM FOOD REQUEST. OVEN STAYS WARM WITH POWER OFF. PULLED & COLLARED C/B. - [SDR CALA2021022400223](https://openairdocs.org/sdr/CALA2021022400223.md): Oil System · bypassing · Feb 24, 2021 · N77538 · Boeing 737824 · Turbine Engine Oil System > OIL BYPASS LT WOULD NOT EXTINGUISH, SHUT DOWN ENG. REMOVED AND REPLACED NR 2 ENGINE REF LOG PAGE 5912942. ALL SYSTEMS CHECK GOOD. ALL PARAMETERS NORMAL. - [SDR CALA2021022200209](https://openairdocs.org/sdr/CALA2021022200209.md): Pump · failed · Feb 22, 2021 · N77538 · Boeing 7378 · Hydraulic Pump (Electric/Engine), Main > ENG 2 LOW PRESSURE LIGHT ON PERFORMED HYDRAULIC SYSTEM B ENGINE-DRIVEN PUMP (EDP) REMOVAL AS PER AMM TASK 29-11-11-000-801-001. ATTACHED PICTURES OF EDP ENG 2. REPLACED EDP AT ENG 2 AS PER AMM 29-11-11 PB401. PENDING LEAK CHK AND OPERATIONAL TEST ADD EMP:U37 - [SDR CALA2018032601019](https://openairdocs.org/sdr/CALA2018032601019.md): Lens · missing · Mar 26, 2018 · N77538 · Boeing 737824 · Emergency Lighting > EMERGENCY LIGHT DOES NOT TURN ON, LIGHT MISSING THE LENS. REPLACED LENS. ## 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 = 'N77538' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N77538/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.