# SDR DALA2022103107022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 26, 2022
- Submitted: October 31, 2022
- Operation: Air carrier
- Aircraft: [N812DN](https://openairdocs.org/aircraft/N812DN), registered now
- Make and model: Boeing 737932ER
- Aircraft serial: 31923
- Aircraft time: 28,957 hours, 11,011 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MF4040001
- Part serial: B096495
- Condition: Failed
- Location: First Officer'S
- Part time: 21,459 hours, 8,530 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2022103107022

## Discrepancy

DURING OPERATIONAL CHECK OF THE FLIGHT CREW OXYGEN MASKS, TEST FAIL, F/O SIDE. F/O OXYGEN MASK WAS REMOVED AND REPLACED PER B737-900 AMM 35-12-85. OPS TEST OK.

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