# SDR DALA2026102005754

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 20, 2026
- Submitted: October 20, 2026
- Operation: Air carrier
- Aircraft: [N827NW](https://openairdocs.org/aircraft/N827NW), registered now
- Make and model: Airbus A330-302
- Registry model: [Airbus A330-302](https://openairdocs.org/model/airbus-a330-302) (OpenAirDocs)
- Aircraft serial: 1716
- Aircraft time: 42,121 hours, 5,349 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: 174690M7
- Part serial: 46742
- Condition: Expired
- Location: Zone 200
- Part time: 27,771 hours, 3,515 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/DALA2026102005754

## Discrepancy

DURING COCKPIT OXY MASK INSPECTION FOUND F/O OXY MASK WITH EXP DATE: 2025-09(SEP)-19. CORRECTIVE ACTION: REPLACED MASK ASSY PER A330 AMM 35-12-41. (1875660) AIRCRAFT WAS GROUNDED.

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