# SDR DALA2026042202552

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2026
- Submitted: April 22, 2026
- Operation: Air carrier
- Aircraft: [N359NB](https://openairdocs.org/aircraft/N359NB), registered now
- Make and model: Airbus A319-114
- Registry model: [Airbus A319-114](https://openairdocs.org/model/airbus-a319-114) (OpenAirDocs)
- Aircraft serial: 1923
- Aircraft time: 62,267 hours, 32,033 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MF100511
- Part serial: B160894
- Condition: Faulted
- Location: Zone 200
- Part time: 16,788 hours, 7,317 cycles
- 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/DALA2026042202552

## Discrepancy

SHIP 3159 DISC: DURING CAPT OXYGEN MASK TEST THE MASK STARTED FLOWING OXYGEN NON - STOP. THE MASK WAS REMOVED. SPINNING THE EMER DIAL AND FLIPPING THE 100% SWITCH HAD NO EFFECT. AFTER ABOUT 45 SECONDS IT SHUT OFF WITH NO OTHER ACTIONS. C/A: R&R CAPT'S O2 MASK IAW A319 AMM 35-12. OPS & LEAK CK. GOOD. A/C OK FOR SVC. (LP: 860810). AIRCRAFT WAS GROUNDED

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