# SDR DALA2025082606331

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2025
- Submitted: August 26, 2025
- Operation: Air carrier
- Aircraft: [N355NW](https://openairdocs.org/aircraft/N355NW), registered now
- Make and model: Airbus A320-212
- Registry model: [Airbus A320-212](https://openairdocs.org/model/airbus-industrie-a320-212) (OpenAirDocs)
- Aircraft serial: 807
- Aircraft time: 78,803 hours, 37,298 cycles
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Oxygen Mask
- Condition: Unwanted Deploy
- Location: Zone 200
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025082606331

## Discrepancy

DURING 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 PROCEDURES AND PLACARD REMOVED. (LP: 1149577)

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