JASC 3520

Service difficulty reports · 2,733

Reports filed under 3520 · Passenger Oxygen System, newest first.

Query with SQL
duckdb -csv -c "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 jasc_code = '3520'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR CALA2025110210799Oxygen Mask · no testRIGHT AFT GALLEY MANUAL OXYGEN DEPLOYMENT DROP FAILED. RT AFT GALLEY OXYGEN BOX DOOR AND OXYGEN PASSENGER RIGHT CIRCUIT BREAKER IAW AMM 35-22-00-700-802. RT AFT GALLEY MANUAL OXYGEN OPS TESTED GOOD IAW AMM 35-22-00-700-802.Oct 29, 2025 · N26226 · Boeing 737824SDR CALA2025110210797Oxygen Mask · no testLEFT SEAT 34 MANUAL OXYGEN DEPLOYMENT DROP FAILED. SEAT 34ABC OXYGEN BOX DOOR ON PSU AND OXY INDICATOR AND OXYGEN PASSENGER LEFT CIRCUIT BREAKERS IAW AMM 35-22-00 -700-802. MANUAL OXYGEN DEPLOY OPS TEST GOOD IAW AMM 35-22-00-700-802.Oct 29, 2025 · N26226 · Boeing 737824SDR CALA2025110210795Oxygen Mask · no testRIGHT SEAT 1 MANUAL OXYGEN DEPLOYMENT DROP FAILED. RECYCLED SEAT 1EF O2 BOX DOOR ON PSU AND O2 IND AND O2 PASSENGER RH CB IAW AMM 35-22-00-700-802. MANUAL O2 MASK OPS CHECK GOOD IAW B737-800 AMM 35-22-00-700-802.Oct 29, 2025 · N26226 · Boeing 737824SDR DALA2025102907931Latch · brokenSHIP 3310 OXYGEN PANEL LATCH BROKEN AT LOCATION 103. CORRECTIVE ACTION: RESET LATCH AND CLOSED PER A330 AMM 35-21. OK FOR SERVICE. (1277133)Oct 28, 2025 · N810NW · Airbus A330323SDR DALA2025102807902Oxygen Mask · unwanted deploySHIP 3301 1R LAV THE OXYGEN MASK ARE DEPLOYED. CORRECTIVE ACTION: RE-PACKED MASKS PER A330 AMM 35-21. OK FOR SERVICE. (1274858)Oct 27, 2025 · N801NW · Airbus A330323SDR DALA2025102207705Oxygen Mask · unwanted deployOXYGEN MASK DEPLOYED IN AIRCRAFT RIGHT AFT LAV DUE TO MALFUNCTION. REPACKED AND SECURED O2 MASK IN LAV 202 IAW A320 AMM 35-21-41. OK FOR SERVICE. (LP: 1261184)Oct 20, 2025 · N338NW · Airbus A320212SDR DALA2025102207704Oxygen Mask · unwanted deployOXYGEN PANEL MASK DEPLOYED AFT OUTBOARD LAVATORY. STOWED PAX O2 MASKS AT AFT RT LAVATORY. OKAY TO CONT. IN SVC. (LP: 1260451)Oct 19, 2025 · N338NW · Airbus A320212SDR DALA2025101507542Oxygen Mask · dislodgedFA BUNK NR 2 CREW REST O2 MASK HANGING. REPACKED MASKS IAW AMM 35-23. OK FOR SERVICE. (7832529)Oct 15, 2025 · N826NW · Airbus A330302SDR DALA2025101307454Oxygen Mask · unwanted deployOXYGEN PANEL MASK DEPLOYED. STRUCK BY CARRIER IN 504R, CAUSING IT TO DEPLOY. C/A: RESTOWED O2 MASK AT LOCATION 401PER A320 AMM 35-30OK FOR SERVICE. (LP: 1248583)Oct 12, 2025 · N325US · Airbus A320211SDR DALA2025100607253Oxygen Bottle · unwanted deployOXYGEN MASK FORWARD RIGHT LAV DROPPED ON LANDING. MASKS RESTOWED PER A330-300 AMM 35-21-43. OK FOR SERVICE. (7268642)Oct 4, 2025 · N821NW · Airbus A330323SDR DXTA2025100205176Oxygen Mask · unwanted deployCREW INADVERTENTLY DEPLOYED THE PASSENGER OXYGEN MASKS DURING THE COCKPIT PREPARARION FLOW. ALL MASKS IN CABIN DEPLOYED, ALL PINS ARE STILL IN PLACE. CORRECTIVE ACTION: PERFORMED STOWAGE OF PASSENGER OXYGEN MASKS AS REQUIRED. REINSTALLED CARTRIDGES AND CLOSEDOct 2, 2025 · N271QS · Emb EMB545SDR REXA2025093000897Oxygen Mask · no deployDURING CRUISE CREW REPORTED R BLEED DUCT WARNING WITH CABIN DEPRESSURIZATION. FOLLOWING QRH PROCEDURES THE DESCENDED AND DECLARED EMERGENCY. PASSENGER OXYGEN MASKS WERE DEPLOYED WITH A FEW NOT DEPLOYED, ROWS 7 C7D AND 16 A&B. INSPECTED SEAT 7 C/D AND 16 A/B OXSep 26, 2025 · N340CA · Cndair CL6002C10SDR DALA2025091706828Oxygen Mask · unwanted deployROW 13 PAX O2 MASK DEPLOYED. REPACKED ROW 13 -A O2 MASK PER A320 AMM 35-21 A/C OK FOR SERVICE. (LP: 7870162)Sep 15, 2025 · N328NW · Airbus A320211SDR DALA2025091706829Panel · stuckAFT GALLEY OXYGEN MASK COVER NEAR DOOR 2L STUCK BEHIND DOOR PANEL. APPEARS IT WILL NOT DEPLOY. PANEL IS SECURED PER A320 AMM 35-23 OK FOR SVC. (LP: 1199291)Sep 14, 2025 · N321US · Airbus A320211SDR DALA2025091706832Oxygen Mask · dislodgedAFT GALLEY O2 MASK FELL ON LANDING. FWD TO MEL 35- 21-01D. M PROCEDURE C/W AND PLACARD INSTALLED. R/R AFT GALLEY OXYGEN PANEL DOOR ASSYEMBLY IN REF. TO A320 AMM 25-25. AFT GALLEY OXYGEN PANEL DOOR OPS CHECK NORMAL. MEL AND PLACARD REMOVED. " M " PROCEDURE REVSep 13, 2025 · N344NW · Airbus A320212SDR DALA2025091706830Oxygen Mask · unwanted deployOXYGEN MASKS DROPPED OVER SEAT 13ABC ON TAXI-OUT. RESET PASSENGER OVERHEAD OXYGEN STORAGE COMPARTMENT PER A320 AMM 35-21-43. A/C OK FOR SVC. (LP: 7870156)Sep 13, 2025 · N328NW · Airbus A320211SDR DALA2025091106705Oxygen Mask · unwanted deployUPON ARRIVAL AFT LEFT LAV OXYGEN MASK DEPLOYED FROM CEILING. RESTOWED OXYGEN MASKS IN THE AFT LEFT LAV PER 320 AMM 35-21. VERFIED DOOR SECURED. A/C OK FOR SVC. (LP: 7595500)Sep 7, 2025 · N343NW · Airbus A320212SDR DALA2025091106703Oxygen Mask · unwanted deployO2 MASK IN AFT LAV IS DROPPED. REPACKED LAV O2 MASKS PER A320 AMM 35-21. OK FOR CONT SVC. (LP: 7858597)Sep 7, 2025 · N343NW · Airbus A320212SDR DALA2025091106706Oxygen Mask · unwanted deployONE ROW 17 MASKS DROPPED ABC. REPACKED AND RESTOWED OXY MASKS IAW AMM 35-21. A/C OK FOR SVC.Sep 6, 2025 · N374NW · Airbus A320212SDR DALA2025090906646Oxygen Mask · inoperativeL4 LAVATORY OXYGEN MASK INOPERATIVE. REPLACED PSU ASSY IAW AMM 35-21. OK FOR SERVICE.Sep 5, 2025 · N431DX · Airbus A330941SDR CALA2025090908662Oxygen Panel · unsecure2R OXYGEN MASK AT FA STATION AFT FALLING DOWN, MASK STILL IN COMARTMENT, SECURED PANEL AT 2R O2 AT FA STATION. MASK DID NOT FALL OUT, PANEL WAS NOT SEATED PROPERLY. REF AMM 35-20-00Sep 5, 2025 · N892UA · Airbus A319132SDR DALA2025090506570Oxygen Mask · unwanted deployOXYGEN PANEL MASK DEPLOYED / LOCATIONS:406 AND 407. REPACKED MASKS PER A330 AMM 35-21. OK FOR SERVICE. (1181746)Sep 4, 2025 · N425DX · Airbus A330941SDR DALA2025090506569Oxygen Mask · unwanted deploy02 MASK IN LAV 201 DEPLOYED. RESECURED LAV 201 PAX 02 MASK PER A330 AMM 35-21. OK FOR SVC. (7637624)Sep 4, 2025 · N826NW · Airbus A330302SDR DALA2025091106702Oxygen Box · faultedOXYGEN PANEL MASK DEPLOYED ABOVE THE 2RC JUMPSEAT. R & R O2 MODULE CONTAINER DOOR ASSY ABOVE 2RC JUMPSEAT IN REF TO A320 CMM 35-21-74. OPS CHECK NML PER MASK DROP TEST PER A320 AMM 35-23. MEL AND PLACARD RMVD. "M" PROCEDURE RVSD. OK FOR SVC. (LP: 1176497)Sep 1, 2025 · N344NW · Airbus A320212SDR DALA2025090206475Oxygen Mask · unwanted deploySHIP 3122 OXYGEN PANEL MASK DEPLOYED. CORRECTIVE ACTION: REPACKED MASK AND SECURED PANEL. (1176232).Sep 1, 2025 · N322NB · Airbus A319114SDR DALA2025090106459Oxygen Mask · unwanted deployPASSENGER OXYGEN MASK AT ROW 15DEF DROP AFTER LANDING. REPACKED O2 MASKS IN ROW 15DEF IAW AMM 35-20. (7270953).Aug 31, 2025 · N329NB · Airbus A319114SDR DALA2025090206523Oxygen Mask · unwanted deployAFT LAV OXYGEN MASK FELL DOWN. LAVATORY OXYGEN MODULE. REMOVED AND REPLACED PASSENGER OXYGEN CONTAINER IAW AMM 35 -21. OPS CK GOOD. (LP: 7403310)Aug 29, 2025 · N347NW · Airbus A320212SDR DALA2025082906388Oxygen Panel · openPSU PANEL DROPPED DOWN AT ROW 32. REPACKED MASKS AND CLOSED DOOR PER A330 AMM 35-31. (7294974)Aug 28, 2025 · N407DX · Airbus A330941SDR DALA2025082606330Oxygen Mask · unwanted deployAFT GALLEY O2 MASK DROPPED AFTER LANDING. RE-STOWED AFT GALLEY O2 MASK. OK FOR SVC. (LP: 7189532)Aug 23, 2025 · N355NW · Airbus A320212SDR DALA2025082106237Housing · brokenOXYGEN PANEL LATCH BROKEN, COMPARTMENT OPENED DURING TAKEOFF. THE LATCH IS BROKEN. I WAS ABLE TO GET EVERYTHING BACK IN AND CLOSE IT BUT IT NEEDS TO BE REPAIRED. CONFIRMED ITS NOT THE LATCH BUT THE HOUSING ITSELF THAT IS BROKEN. INSPECTED PSU LATCHES. AND HIAug 17, 2025 · N340NW · Airbus A320212SDR AALA202509112079Oxygen Mask · missingAIRCRAFT IN BASE MAINTENANCE: YELLOWISH MASK IN EMERGENCY OXYGEN CONTAINER ALONG PASSENGER CABIN RH SIDE EXCEPT ROW 25. FINAL REPAIR UPDATED: REPLACED MASK IN EMERGENCY OXYGEN CONTAINER ALONG PASSENGER CABIN RH SIDE EXCEPT ROW 25. IAW AMM 35-21-43-000-001-A ANAug 16, 2025 · N664AW · Airbus A320232SDR DALA2025082606331Oxygen Mask · unwanted deployDURING TAKEOFF, OXYGEN MASKED DROPPED DOWN MID CLIMB. PLACED AFT GALLEY O2 MODULE ON MEL 35-21-01D M PROCEDURES C/W PLACARD INSTALLED AC OK FOR SVC. REMOVED AND REPLACED EMERGENCY OXYGEN CONTAINER OVER L1 DOOR PER A320 AMM 35-21. OPERATIONAL TEST GOOD. M PROAug 16, 2025 · N355NW · Airbus A320212SDR CALA2025081907911Oxygen Gen · dischargedSEAT 30ABC O2 GENERATOR ACCIDENTLY DISCHARGED. MASKS ARE STOWED REF AMM TASK 35-22-11-400-804-001. COMPLETED REMOVE AND REPLACE OF SEAT 30 ABC O2 GENERATOR. ACCOMPLISHED IDT REQUIREMENTS PER GMM 09-10-05 FOR OXYGEN GENERATOR REPLACEMENT AT ROW 30ABC.Aug 15, 2025 · N54711 · Boeing 737724SDR CALA2025111011061Oxygen Gen · misinstalledSEAT 26ABC PSU O2 GENERATOR FOUND TO HAVE A SHIPPING PIN INSTALL. REMOVED SHIPPING PIN AND INSTALLED SAFETY PIN IAW AMM TASK 35-22-11-000-811-001.Aug 14, 2025 · N33209 · Boeing 737824SDR DALA2025081806166Oxygen Box · malfunctionedFORWARD LAV 02 MASKS TRIPPED. R & R LAV OXYGEN CONTAINER ASSY IAW AMM 35-21. OPS CHECK GOOD. (7741268)Aug 14, 2025 · N323NB · Airbus A319114SDR DALA2025081406082Latch · brokenSHIP 3436 OXYGEN PANEL LATCH BROKEN AT SEAT 42H. CORRECTIVE ACTION: REPLACED LATCH PER A330 AMM 35-21. OK FOR SERVICE. (1142268)Aug 14, 2025 · N436DX · Airbus A330941SDR DALA2025081306067Oxygen Mask · unsecureFORWARD LAV OXYGEN MASK DOOR NEEDS TO BE RESECURED. RESECURED FWD LAV OXYGEN MASK DOOR PER A A319 AMM 25-25.Aug 13, 2025 · N323NB · Airbus A319114SDR DALA2025081206015Door · unsecureSHIP 3438 PSU DOOR AT SEAT 43AB IN NOT FULLY LATCHED. CORRECTIVE ACTION: REPLACED EMERGENCY OXYGEN CONTAINER PER A330 AMM 35-21-41 AND 35- 21-42. OPERATIONAL TEST OK PER AMM 35-21-00. (1135688)Aug 10, 2025 · N438DX · Airbus A330941SDR DALA2025081206020Oxygen Mask · unwanted deploySHIP 3416 4 MASKS DEPLOYED IN FLIGHT ATTENDANTS CREW REST. CORRECTIVE ACTION: RE-SECURED PER A330 AMM 35-21-44. OK FOR SERVICE. (6181443)Aug 8, 2025 · N416DX · Airbus A330941SDR DALA2025080705911Oxygen Mask · unwanted deployOXYGEN PANEL MASK DEPLOYED BUNK 5. RE-PACKED MASKS PER A330 AMM 35-21. OK FOR SERVICE.Aug 6, 2025 · N826NW · Airbus A330302SDR DALA2025080405805Oxygen Panel · openL, DOOR OXYGEN PANEL OPENED BUT MASKS DID NOT FALL OUT. CLOSED 2L DOOR O2 MASK PANEL.Aug 2, 2025 · N325US · Airbus A320211SDR DALA2025080405804Oxygen Mask · unwanted deployOXYGEN PANEL MASK DEPLOYED, DOOR OPENED BUT MASKS DID NOT FALL OUT . 2L DOOR. MASK DID NOT DEPLOY. COVER AT 2L F/A SEAT O2 FELL OPEN. REINSTALLED COVER. A/C OK FOR SERVICE.Aug 2, 2025 · N325US · Airbus A320211SDR DALA2025080405803Oxygen Mask · unwanted deployOXYGEN MASK DEPLOYED, FLOW OF OXYGEN NOT RELEASED. CLOSED OXYGEN DOOR PER A320 AMM 35-21.Jul 31, 2025 · N325US · Airbus A320211SDR DALA2025072805665Oxygen Mask · unsecureSHIP 3415 4R LAV 02 MASK HANGING. CORRECTIVE ACTION: REPACKED MASKS PER A330 AMM 35-21. (7080054)Jul 28, 2025 · N415DX · Airbus A330941SDR DALA2025072905674Oxygen Panel · misinstalledSHIP 3269 AFT LAV OXYGEN PANEL DOOR HAS STRINGS HANGING OUT THE SIDES. LOOKS TAMPERED WITH. SECURED O2 PANEL AND STOWED MASKS OK FOR SVC A320AMM 35-21. (LP: 1106540)Jul 26, 2025 · N369NW · Airbus A320212SDR DALA2025072405574Oxygen Mask · unwanted deploySHIP 3309 LAV C O2 MASK DROPPED TOWARDS END OF FLIGHT. CORRECTIVE ACTION: REPACKED MASKS PER A330 AMM 35-21. OK FOR SERVICE. (7442273)Jul 23, 2025 · N809NW · Airbus A330323SDR DALA2025072405555Oxygen Mask · unwanted deploySHIP 3160 ON TAKEOFF OXYGEN MASK AT 3CD FELL OUT. CORRECTIVE ACTION: CLOSED 3CD OXYGEN GEN CONTAINER REF A319 AMM 35-21. (77408748).Jul 23, 2025 · N360NB · Airbus A319114SDR DALA2025072305524Oxygen Mask · unwanted deploySHIP 3260, OXYGEN PANEL MASK DEPLOYED. REINSTALLED O2 MASK IAW A320 AMM 35-21-41. OK FOR SERVICE. (LP: 1097556)Jul 21, 2025 · N360NW · Airbus A320212SDR UIEA2025072100983Oxygen Mask · unwanted deployLAV OXYGEN MASK DEPLOYED MULTIPLE TIMES DURING FLIGHT. RESTOWED MASK IAW AMM 35-23-17. NO FURTHER DEFECTS NOTED.Jul 21, 2025 · N761GT · Boeing 777FSDR UIEA2025072100989Door · openOXYGEN MASK DOOR OPENED IN FLIGHT IN LAVATORY.(<P>RE-PACKED AND SECURED LAV O2 MASK DOOR IAW AMM 35-23-17. OPS CHECK GOOD.</P>)Jul 21, 2025 · N761GT · Boeing 777F
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