# SDR DALA2018122107328

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 2018
- Submitted: December 21, 2018
- Operation: Air carrier
- Aircraft: [N846DN](https://openairdocs.org/aircraft/N846DN), registered now
- Make and model: Boeing 737932ER
- Aircraft serial: 31957
- Aircraft time: 11,273 hours, 4,302 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Condition: Inoperative
- Location: Cockpit
- 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/DALA2018122107328

## Discrepancy

SHIP 3846 OBSERVERS OXYGEN MASK INOP. CORECTIVE ACTION: CREW REPORTS PRESS TO TEST INOP. PERFORMED PRESS TO TEST PER B737 AMM 35-12. OPS CK OK (5135186).

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