# Service difficulty reports: JASC 3520

A list on [JASC 3520](https://openairdocs.org/jasc/3520.md).

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

Page 1 of 55 · 2,733 reports

- [SDR DALA2026102105779](https://openairdocs.org/sdr/DALA2026102105779.md): Latch · broken · Oct 16, 2026 · N325US · Airbus A320211
  > OXYGEN PANEL LATCH BROKEN. OPENED DURING TAKEOFF. UPPER AND LOWER LATCHES ARE DAMAGED AND WILL NOT CLOSE PROPERLY. THE PANEL APPEARS TO BE MISALIGNED, LEAVING THE MASKS EXPOSED. C/A: RESECURED O2 MASK BOX AND LATCH AS REQ. MASK DROP TEST GOOD. A/C OK FOR SVC.
- [SDR QXEA2026101300194](https://openairdocs.org/sdr/QXEA2026101300194.md): Oxygen Box · malfunctioned · Oct 11, 2026 · N648QX · Emb ERJ170200LR
  > FLIGHT 9987. FA 2 DISPENCING UNIT IN FWD GALLEY IS INOP. FLIGHT ATTENDANT O2 DISPENCING UNIT IN FWD LAVIS INOP. PLACED ON MEL. MEL'S CLEARED. T/S FWD G1 GALLEY O2 BOX INOP. OXYGEN BOX WILL NOT OPEN DURING PAX OXYGEN SYS OPS TEST IAW AMM 35-20-00-710-801-A, B
- [SDR 2026F00225](https://openairdocs.org/sdr/2026F00225.md): Line · disconnected · Oct 9, 2026 · N873C · Univar 1083
  > DURING OPS CHK OF PAX OXYGEN CONTAINER OPENING FOUND OXYGEN LINE ABOVE MID LAVATORY (UNDER CEILING PANEL 251QC) NOT CONNECTED TO THE MAIN SUPPLY SYSTEM AND OXYGEN FLOW RELASED AT THIS LOCATION. THAT CAUSES THAT THE MID LAVATORY OXY CONTAINER DOESNT OPEN. B1 A
- [SDR QXEA2026100100182](https://openairdocs.org/sdr/QXEA2026100100182.md): Pin · misaligned · Sep 29, 2026 · N626QX · Emb ERJ170200LR
  > REF W/O 368956 MTC E-35-0025. FOUND O2 GENERATOR PIN MISALIGNED IN FWD AND AFT FA OXYGEN BOX ASSY. REMOVED FWD AND AFT FA O2 GENERATOR AND REINSTALLED CORRECTLY IAW MTC E-35-0025 ITEMS 3-6. O2 GENERATOR NOW POSITIONED CORRECTLY,
- [SDR QXEA2026100100180](https://openairdocs.org/sdr/QXEA2026100100180.md): Pin · misaligned · Sep 28, 2026 · N654QX · Emb ERJ170200LR
  > REF W/O 368596 MTC E-35-0025. FOUND O2 GENERATOR PIN MISALIGNED IN AFT AND FORWARD FA OXYGEN BOX ASSY. REMOVED AFT AND FORWARD FA OXYGEN GENERATOR AND REINSTALLED CORRECTLY IAW MTC E-35-0025 ITEMS 11-14. O2 GENERATOR NOW POSITIONED CORRECTLY.
- [SDR DALA2026100105467](https://openairdocs.org/sdr/DALA2026100105467.md): Oxygen Mask · unsecure · Sep 27, 2026 · N340NW · Airbus A320212
  > OXYGEN MASK PANEL ON AIRCRAFT LEFT IN THE AFT GALLEY (LOCATED ABOVE THE COFFEE POTS) IS LOOSE. THE PANEL COVERING THE MASKS FELL OPEN DURING TAXI AS WELL AS TAKEOFF. THE PANEL WILL NOT REMAIN SHUT ON ITS OWN. RE-SECURED; INSPECTED & RESET LATCH, PANEL CLOSED
- [SDR QXEA2026100100187](https://openairdocs.org/sdr/QXEA2026100100187.md): Pin · misaligned · Sep 27, 2026 · N625QX · Emb ERJ170200LR
  > REF W/O 369076 MTC E-35-0025. FOUND O2 GENERATOR PIN MISALIGNED IN FWD AND AFT FA OXYGEN BOX ASSY. REMOVED FWD AND AFT FA OXYGEN/GENERATOR AND REINSTALLED CORRECTLY IAW MTC E-35-0025 ITEMS 3-6. OXYGEN GENERATOR NOW POSITIONED CORRECTLY,
- [SDR QXEA2026100100184](https://openairdocs.org/sdr/QXEA2026100100184.md): Pin · misaligned · Sep 27, 2026 · N622QX · Emb ERJ170200LR
  > REF W/O 369039 MTC E-35-0025, FOUND FWD GALLEY 02 GENERATOR PIN MISALIGNED. REMOVED FWD GALLEY OXYGEN BOX/GENERATOR ASSY THEN REINSTALLED CORRECTLY REF W/O 369039 MTC E-35-0025 ITEMS 7-10 FOR WORK PERFORMED. OXYGEN BOX/GENERATOR ASSY ARE NOW INSTALLED AND POSI
- [SDR QXEA2026100100181](https://openairdocs.org/sdr/QXEA2026100100181.md): Pin · misaligned · Sep 27, 2026 · N633QX · Emb ERJ170200LR
  > REF W/O 368635 MTC E-35-0025. FOUND O2 GENERATOR PIN MISALIGNED IN AFT AND FORWARD FA OXYGEN BOX ASSY. REMOVED AFT AND FWD FA OXYGEN/GENERATOR AND REINSTALLED CORRECTLY IAW MTX T/C E-35-0025 ITEMS #11-14. OXYGEN GENERATOR NOW POSITIONED CORRECTLY.
- [SDR DALA2026100105464](https://openairdocs.org/sdr/DALA2026100105464.md): Oxygen Mask · unwanted deploy · Sep 26, 2026 · N349NW · Airbus A320212
  > PAX 02 MASKS DEPLOYED AT 1A AND 1B. RE-PACKED 02 MASKS AT 1A AND 1B REF AMM 35-21. (LP: 9196702, AIRCRAFT WAS GROUNDED)
- [SDR QXEA2026100100189](https://openairdocs.org/sdr/QXEA2026100100189.md): Lanyard · misaligned · Sep 26, 2026 · N634QX · Emb ERJ170200LR
  > FWD AND AFT FA OXYGEN GENERATOR MASK LANYARD FOUND ALIGNED INCORRECTLY. ADJUSTED OXYGEN GENERATOR FOR FWD AND AFT OXYGEN BOX ASSY. SO THAT THE MASK LANYARD AND PULL PIN ARE ALIGNED WITH THE GUIDE TUBE. RESECURED GENERATOR TO BOX ASSY. REF WORK PERFORMED ON W/O
- [SDR QXEA2026100100188](https://openairdocs.org/sdr/QXEA2026100100188.md): Lanyard · misaligned · Sep 26, 2026 · N657QX · Emb ERJ170200LR
  > FWD AND AFT O2 BOX ASSY MASK LANYARD FOUND INCORRECTLY ALIGNED WITH GUIDE TUBE. ADJUSTED OXYGEN GENERATOR ON FWD AND AFT GALLEY OXYGEN BOX ASSY. SO THAT THE MASK LANYARD AND PULL PIN ALLIGN WITH GUIDE TUBE. RESECURRED GENERATOR TO BOX ASSY. REF WORK PERFORMED
- [SDR QXEA2026100100186](https://openairdocs.org/sdr/QXEA2026100100186.md): Lanyard · misaligned · Sep 26, 2026 · N647QX · Emb ERJ170200LR
  > FWD AND AFT FA OXYGEN GENERATOR MASK LANYARD FOUND ALLIGNED INCORRECTLY. ADJUSTED OXYGEN GENERATOR ON FWD AND AFT OXYGEN BOX ASSY. SO THAT THE MASK LANYARD AND PULL PIN ALLIGN WITH GUIDE TUBE. RESECURED GENERATOR TO BOX ASSY. REF WORK PERFORMED ON W/O 369072
- [SDR QXEA2026100100185](https://openairdocs.org/sdr/QXEA2026100100185.md): Lanyard · misaligned · Sep 25, 2026 · N664QX · Emb ERJ170200LR
  > FWD AND AFT O2 BOX ASSY MASK LANYARD FOUND INCORRECTLY ALLIGNED WITH GUIDE TUBE. ADJUSTED OXYGEN GENERATOR ON FWD AND AFT GALLEY OXYGEN BOX ASSY. SO THAT THE MASK LANYARD AND PULL PIN ALLIGN WITH THE GUIDE TUBE. RESECURED GENERATOR TO THE BOX ASSY. REF WORK P
- [SDR QXEA2026100100183](https://openairdocs.org/sdr/QXEA2026100100183.md): Lanyard · misaligned · Sep 25, 2026 · N671QX · Emb ERJ170200LR
  > FWD AND AFT GALLEY OXYGEN BOX ASSY MASK LANYARD FOUND INCORRECTLY ALLIGNED WITH GUIDE TUBE. ADJUSTED OXYGEN GENERATOR ON FWD AND AFT GALLEY OXYGEN BOX ASSY SO THAT THE MASK LANYARD ALLIGNED WITH PULL PIN GUIDE TUBE. RESECURED GENERATOR TO BOX ASSY REF CMM 35-2
- [SDR QXEA2026100100179](https://openairdocs.org/sdr/QXEA2026100100179.md): Oxygen Gen · misinstalled · Sep 25, 2026 · N670QX · Emb ERJ170200LR
  > FWD ENTRY DOOR AND AFT GALLEY FA OXYGEN GENERATOR INSTALLED INCORRECTLY. REMOVED FA OXYGEN BOX/GENERATOR AND REINSTALLED CORRECTLY REF W/O 368356 MTC E-35-0025 ITEM 3 TO 5 FOR WORK PERFORMED. OXYGEN BOX/GENERATOR ARE INSTALLED AND POSITIONED CORRECTLY.
- [SDR DALA2026092805367](https://openairdocs.org/sdr/DALA2026092805367.md): Oxygen Panel · unsecure · Sep 25, 2026 · N327NB · Airbus A319114
  > SEATS 10E, 10D, & 10F OXYGEN PANEL CAME LOOSE DURING TAKE OFF. SECURED THE PANEL. NOW CHKD GOOD. (LP: 1831789, AIRCRAFT WAS GROUNDED)
- [SDR AALA202609245386](https://openairdocs.org/sdr/AALA202609245386.md): Oxygen Gen · activated · Sep 21, 2026 · N723AN · Boeing 777323ER
  > AIRCRAFT IN BASE MAINTENANCE: DOOR 4R OXYGEN GENERATOR FIRED. DOOR 4R OXYGEN GENERATOR REPLACED AS PER AMM 35-21-11 AND AFMM 20-11-11.
- [SDR AALA202609235386](https://openairdocs.org/sdr/AALA202609235386.md): Oxygen Gen · activated · Sep 21, 2026 · N723AN · Boeing 777323ER
  > AIRCRAFT IN BASE MAINTENANCE: DOOR 4R OXYGEN GENERATOR FIRED. DOOR 4R OXYGEN GENERATOR REPLACED AS PER AMM 35-21-11 AND AFMM 20-11-11.
- [SDR DALA2026092205296](https://openairdocs.org/sdr/DALA2026092205296.md): Oxygen Gen · wrong part · Sep 21, 2026 · N339NB · Airbus A319114
  > DURING 60 DAY RFID CHECK FOUND WRONG OXYGEN GENERATORS INSTALLED AT JS 104 AND GAL 401. REPLACED OXYGEN GENERATORS AT JS 104 AND GAL 401. IAW AMM 35-21. (LP: 9118720, AIRCRAFT WAS GROUNDED)
- [SDR DALA2026100705546](https://openairdocs.org/sdr/DALA2026100705546.md): Tee Fitting · disconnected · Sep 16, 2026 · N709TW · Boeing 7572Q8
  > DURING THE REPLACEMENT OF THE CHEMICAL OXYGEN GENERATORS, MECHANICS DISCOVERED SEVERAL OF THE TEE-FITTING MANIFOLDS DISCONNECTED FROM THE CHEMICAL OXYGEN GENERATORS. C/W ERA 636985-14. (8644548)(AIRCRAFT GROUNDED)
- [SDR DALA2026091305110](https://openairdocs.org/sdr/DALA2026091305110.md): Panel · detached · Sep 12, 2026 · N337NB · Airbus A319114
  > OXYGEN PANEL IN AFT GALLEY FELL OFF. FOUND RUBBER SEAL TUBE MISSING FROM BOTH SIDES, NO DMG TO MODULE. INSTALLED NEW SEALS AS REQ'D, MODULE SECURED. MEL & PLACARDS REMOVED, OK FOR SVC. (LP: 9118950, AIRCRAFT WAS GROUNDED)
- [SDR YENA2026091100793](https://openairdocs.org/sdr/YENA2026091100793.md): Oxygen Box · no test · Sep 11, 2026 · N4062J · Airbus A321271NX
  > DURING HEAVY MAINTENANCE, AFT CTR 02 BOX FAILED OPS TEST; (RESOLVED ON W/O: 1473121 TASKCARD: NR-00047) REF AAR WO 440624 NR 30769 TROUBLESHOOT AND REPAIRED AFT CENTER O2 BOX IAW AEROSPACE CMM 35-21-74. CRI ACCOMPLISHED ON NR 30823. OPS CHECK GOOD IAW AMM 35
- [SDR DALA2026091405123](https://openairdocs.org/sdr/DALA2026091405123.md): Latch · broken · Sep 10, 2026 · N827NW · Airbus A330302
  > OXYGEN PANEL LATCH BROKEN AT 1R LAV. REPLACED 1R LAV O2 CONTAINER/ GENERATOR IAW AMM 35-21. MASK DROP OK. (1804649) AIRCRAFT WAS GROUNDED.
- [SDR YENA2026091100794](https://openairdocs.org/sdr/YENA2026091100794.md): Oxygen Box · no test · Sep 7, 2026 · N633JB · Airbus A320232
  > DURING HEAVY MAINTENANCE, AFT CTR 02 BOX FAILED OPS TEST; (RESOLVED ON W/O: 1473121 TASKCARD: NR-00047) REF AAR WO 440624 NR 30769 TROUBLESHOOT AND REPAIRED AFT CENTER O2 BOX IAW AEROSPACE CMM 35-21-74. CRI ACCOMPLISHED ON NR 30823. OPS CHECK GOOD IAW AMM 35
- [SDR DALA2026090304978](https://openairdocs.org/sdr/DALA2026090304978.md): Oxygen Mask · unwanted deploy · Sep 2, 2026 · N970AT · Boeing 717200
  > O2 MASK DROPPED OVER SEATS 15CDE, RESTOWED O2 MASKS IAW AMM 35-23. (8816982) (AIRCRAFT GROUNDED).
- [SDR DALA2026090204957](https://openairdocs.org/sdr/DALA2026090204957.md): Oxygen Mask · unwanted deploy · Sep 2, 2026 · N803NW · Airbus A330323
  > L3 LAV O2 MASKS DROPPED. REPACKED THE MASKS IAW AMM 35-21. OK FOR SERVICE. (9135260) AIRCRAFT WAS GROUNDED.
- [SDR DALA2026090304976](https://openairdocs.org/sdr/DALA2026090304976.md): O2 Generator · expired · Sep 1, 2026 · N581NW · Boeing 757351
  > O2 GENERATOR EXPIRED AT 48ABC. REPLACED O2 GEN IAW AMM 35-21. (8462276)(AIRCRAFT GROUNDED)
- [SDR UIEA2026083000823](https://openairdocs.org/sdr/UIEA2026083000823.md): Door · broken · Aug 30, 2026 · N641GT · Boeing 76738E
  > RIGHT LAV MID, HAD THE O2 DOOR BROKEN, WILL NOT HOLD IN O2 MASK. TRANSFER TO DMI 258393 PER MEL 35-21-01-01A CAT B. SECURED THE O2 MASK DOOR IAW AMM 35-21-34. OPS CHKD GOOD. THIS CLEARS DMI 258393, PLACARDS REMOVED.
- [SDR DALA2026082504806](https://openairdocs.org/sdr/DALA2026082504806.md): Oxygen Mask · unwanted deploy · Aug 23, 2026 · N341NW · Airbus A320212
  > AFTER TAKEOFF PAX MASK AT 21DEF DEPLOYED. REPACKED THE PASSENGER OXYGEN MASK AT SEAT 21DEF IAW A320 AMM 35 -21-43. (LP: 9197306, IARCRAFT WAS GROUNDED)
- [SDR DALA2026082404796](https://openairdocs.org/sdr/DALA2026082404796.md): Oxygen Mask · unsecure · Aug 21, 2026 · N936AT · Boeing 717200
  > FWD FA JS OXYGEN MASK FELL, SECURED MASKS & STOWAGE BOX IAW AMM 35-13. (6787282) (AIRCRAFT GROUNDED).
- [SDR 2026FA0000647](https://openairdocs.org/sdr/2026FA0000647.md): Line · leaking · Aug 17, 2026 · N706GA · Gulstm GVI
  > WHILE CARRYING OUT OXYGEN FOLLOW ONS, LARGE OXYGEN LEAK HEARD FROM BEHIND PSU. UPON DROPPING PSU, OXYGEN LINE FOUND TO NOT BE FULLY CONNECTED TO OXYGEN BOX. ONCE OXYGEN LINE WAS RECONNECTED TO OXYGEN BOX, OXYGEN BOX WAS FOUND TO HAVE A LARGE LEAK AND IS US.2.D
- [SDR DALA2026081004596](https://openairdocs.org/sdr/DALA2026081004596.md): Oxygen Box · unwanted deploy · Aug 5, 2026 · N369NB · Airbus A319114
  > PASSENGER OXYGEN STORAGE, PASSENGER OXYGEN MODULES, ROW 12 ABC O2 MASKS DROPPED AT PUSH BACK. REPACKED O2 MASKS AT PSU SEAT 12ABC & RESET DOOR PER AMM35- 21. (LP: 2822134, AIRCRAFT WAS GROUNDED)
- [SDR DALA2026072804385](https://openairdocs.org/sdr/DALA2026072804385.md): Oxygen Mask · unwanted deploy · Jul 24, 2026 · N336NW · Airbus A320212
  > FWD LAV O2 MASK DEPLOYED IN FLIGHT. REPACKED OXYGEN MASK ASSY IAW AMM 35-21 PROCEDURES. OK FOR SVC. (LP: 9583816, AIRCRAFT WAS GROUNDED)
- [SDR UIEA2026071400606](https://openairdocs.org/sdr/UIEA2026071400606.md): Oxygen Mask · inoperative · Jul 14, 2026 · N708GT · Boeing 777F
  > PORTABLE O2 FULL FACE MASK LOCATED NEAR R1 PAX DOOR FOUND INOPERATIVE. SWAPPED BIN O2 BOTTLE S/N 7631X TO WALL POSITION. PRESSURE & LEAK CHECK GOOD IAW AMM 35-31-00/201& AND IPC 35-31-00-95.
- [SDR DALA2026071504157](https://openairdocs.org/sdr/DALA2026071504157.md): Oxygen Mask · unwanted deploy · Jul 12, 2026 · N335NW · Airbus A320212
  > FA REPORTED IN FLIGHT 2 02 MASKS DROPPED BY 2R DOOR. CONSULTED MCC AND OCC ELECTED TO CONTINUE TO DESTINATION. RESECURED 2R DOOR O2 GEN MASKS IAW AMM 35-21. (LP: 8871613, AIRCRAFT WAS GROUNDED).
- [SDR DALA2026071304120](https://openairdocs.org/sdr/DALA2026071304120.md): Oxygen Mask · unwanted deploy · Jul 10, 2026 · N142DU · Airbus BD5001A10
  > PAX O2 MASKS DROPPED AUTOMATICALLY SEATS 10AB,17AB O2 MASK DOORS HAD TO BE PRYED OPEN 26AB DOOR STUCK HALFWAY OPEN.FLIGHT ATTENDANT STATION 2R O2 MASK DOOR DELAYED DEPLOYMENT. TRANSFERRED TO N/R'S, REF L/P 1691588,1691594,1691602 FOR R/R OF 02 PANELS,02 GENERA
- [SDR DALA2026071304116](https://openairdocs.org/sdr/DALA2026071304116.md): Oxygen Panel · inoperative · Jul 10, 2026 · N142DU · Airbus BD5001A10
  > PSEU PANELS 12AB,14AB,16AB,23AB,25AB,26AB,28AB,10AB,17AB,19CDE IAW AMP 35-21 DUE TO NOT DEPLOYING HAVE BEEN REMOVED. REPLACED WHOLE AIRCRAFT PASSENGER OXYGEN DISPENSING BOX SEATS1 THRU 29 WITH SERVICEABLE PARTS FROM A/C 8307 PER A220 AMP 35-21- 01AAA-720A-A,ST
- [SDR DALA2026071304090](https://openairdocs.org/sdr/DALA2026071304090.md): Oxygen Mask · unwanted deploy · Jul 6, 2026 · N341NW · Airbus A320212
  > O2 MASKS DROPPED AT 10A-C. RESET O2 MASK COVER PER AMM 35-12. ACFT OK. FOR SERVICE. (LP: 8441468, AIRCRAFT WAS GROUNDED)
- [SDR DALA2026071004046](https://openairdocs.org/sdr/DALA2026071004046.md): Oxygen Box · open · Jul 3, 2026 · N359NW · Airbus A320212
  > MASK COMPARTMENT OPENED OVER ROW 28DEF. INSPECTED ROW 28 DEF OXYGEN COMPARTMENT PER AMM 35-21, NO DEFECTS NOTED. PERFORMED MASK REPACKING IAW AMM 35-21. OK FOR SVC. (LP: 8640773, AIRCRAFT WAS GROUNDED)
- [SDR DALA2026070603934](https://openairdocs.org/sdr/DALA2026070603934.md): Pseu · faulted · Jul 3, 2026 · N3757D · Boeing 737832
  > CLIMBING THROUGH 4000, DOOR CAUTION WITH RGT FWD/AFT OVERWING LIGHTS QRH COMPLETED AND PRESSURIZATION IS NORMAL. R & R PSEU IAW MM 32-09 OPS CHKD GOOD. R & R RELAY R743 FLT LOCK RELAY 2 IAW SWPM 20-81- 22 OPS CHKD OF RT EXIT DOORS GOOD IAW MM 52-22-00. (8876
- [SDR DALA2026070503906](https://openairdocs.org/sdr/DALA2026070503906.md): Oxygen Box · open · Jul 1, 2026 · N340NB · Airbus A319114
  > SHIP 3140 DISC: OXYGEN MASK COMPARTMENT OPENED UP ON LANDING IN FORWARD LAV. RESET O2 CONTAINER IN FWD LAV PER A319 AMM 35-21. OK FOR SERVICE. (LP: 8641230, AIRCRAFT WAS GROUNDED)
- [SDR DALA2026070803983](https://openairdocs.org/sdr/DALA2026070803983.md): Latch · missing · Jun 30, 2026 · N335NB · Airbus A319114
  > 11DEF PASSENGER OXYGEN STORAGE, FOUND FWD LATCH FOR O2 GENERATOR PANEL MISSING. FWD TO MEL 35-21 -01A. -M- PROCEDURES C/W. WILL NEED LATCH. REPLACED PASSENGER SERVICE UNIT AT ROW 11DEF IAW AMM 25-25. OPS CHKD GOOD. M PROCEDURE REVERSED. MEL AND PLACARD REMO
- [SDR AALA202606301252](https://openairdocs.org/sdr/AALA202606301252.md): Oxygen Mask · no test · Jun 28, 2026 · N324RA · Boeing 7378
  > AIRCRAFT IN BASE MAINTENANCE: AFT LEFT FLIGHT ATTENDANT OXYGEN MASK DID NOT DEPLOY. REPACKED MASK PER AMM 35-22-31 AND PERFORMED SATISFACTORY OPERATIONAL CHECK PER AMM 35-22-00.
- [SDR DALA2026062903829](https://openairdocs.org/sdr/DALA2026062903829.md): Door · unsecure · Jun 28, 2026 · N401DZ · Airbus A330941
  > PSU DOOR HANGING DOWN AT ROW 3C. RESECURED PSU DOOR PER A330 AMM 35-21. LATCH FOUND DISBONDED. REPAIRED AS REQ'D. (8765354) AIRCRAFT WAS GROUNDED.
- [SDR DALA2026062603807](https://openairdocs.org/sdr/DALA2026062603807.md): Oxygen Mask · unwanted deploy · Jun 24, 2026 · N815NW · Airbus A330323
  > OXYGEN PANEL MASK DEPLOYED / LOCATIONS: 4R. R & R O2 CONTAINER ASSY @4L J/S 111 PER A330 AMM 35-21. OPS CHECK GOOD. (1663037) AIRCRAFT WAS GROUNDED.
- [SDR DALA2026061903665](https://openairdocs.org/sdr/DALA2026061903665.md): Oxygen Mask · unwanted deploy · Jun 18, 2026 · N413DX · Airbus A330941
  > LAV AT 3R OXYGEN MASK DEPLOYED AFTER LANDING. RE-PACKED MASKS PER A330 AMM 35-21. (8747166) AIRCRAFT WAS GROUNDED.
- [SDR DALA2026062203692](https://openairdocs.org/sdr/DALA2026062203692.md): Oxygen Panel · open · Jun 17, 2026 · N341NW · Airbus A320212
  > PASSENGER OXYGEN MASK PANEL OPENED IN FLIGHT ABOVE SEATS 2C AND D. FWD TO MEL 35- 21-01A. M PROCEDURE C/W AND PLACARD INSTALLED. SEATS 2 C AND D UNUSABLE. RESECURED O2 CONTAINER DOOR AT 2CD PER AMM 35-21. M PROCEDURES REVERSED. MEL PLACARD REMOVED. OK FOR SE
- [SDR DALA2026061803649](https://openairdocs.org/sdr/DALA2026061803649.md): Cover · detached · Jun 16, 2026 · N413DX · Airbus A330941
  > DOOR R1 PSU O2 COVER FELL. REPLACED O2 MODULE ASSY PER A330 AMM 35-21. (8747158) AIRCRAFT WAS GROUNDED.
- [SDR DALA2026061603601](https://openairdocs.org/sdr/DALA2026061603601.md): Oxygen Mask · unwanted deploy · Jun 15, 2026 · N408DX · Airbus A330941
  > OXYGEN PANEL MASK DEPLOYED, LOCATION:202. PACKED THE MASK PER AMM 35-21. OK FOR SERVICE. (1648358) AIRCRAFT WAS GROUNDED.

Next page: https://openairdocs.org/jasc/3520/reports.md?page=2

## 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 jasc_code = '3520'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/3520/reports

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