# SDR DALA2026031001631

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2026
- Submitted: March 10, 2026
- Operation: Air carrier
- Aircraft: [N356NW](https://openairdocs.org/aircraft/N356NW), registered now
- Make and model: Airbus A320-212
- Registry model: [Airbus A320-212](https://openairdocs.org/model/airbus-industrie-a320-212) (OpenAirDocs)
- Aircraft serial: 818
- Aircraft time: 80,478 hours, 38,074 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MF100511
- Part serial: B120355
- Condition: Leaking
- Location: Zone 200
- Part time: 23,414 hours, 10,761 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026031001631

## Discrepancy

FO EMERGENCY PRESS TO TEST BUTTON OXYGEN MASK IS LEAKING. R & R FO CREW O2 MASK PER A320 AMM 35-12 OP CKS GOOD AC OK FOR SVC. (LP: 8285974)

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