# SDR DALA2026022601356

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2026
- Submitted: February 26, 2026
- Operation: Air carrier
- Aircraft: [N345NW](https://openairdocs.org/aircraft/N345NW), registered now
- Make and model: Airbus A320-212
- Registry model: [Airbus A320-212](https://openairdocs.org/model/airbus-industrie-a320-212) (OpenAirDocs)
- Aircraft serial: 399
- Aircraft time: 96,555 hours, 44,996 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Box
- Part number: MXP80111
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: TX
- 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/DALA2026022601356

## Discrepancy

F/O O2 MASK BOX INOPERATIVE. SWAPPED WITH 3 OBS. PRIMARY OBSERVERS SLIDING SEAT,  SEAT UNUSABLE MEL ADDED FOR DISPATCH RELEASE, LOG REDEFERRAL REQUIRED.  R & R 3 OBS O2 MASK IAW AMM 35-12,  LEAK CHKD GOOD. REVERSED M PROC. REMOVED MEL/PLACARD,  ACFT OK FOR SERVICE. (LP: 8279229)

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