# SDR CALA2014123001549

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 2014
- Submitted: December 30, 2014
- Operation: Air carrier
- Aircraft: [N16217](https://openairdocs.org/aircraft/N16217), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28777
- Aircraft time: 53,085 hours, 18,563 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Stowage Box
- Part number: MXP1472
- Condition: Defective
- Location: Cockpit
- Stage of operation: TX
- How discovered: C
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2014123001549

## Discrepancy

FIRST OFFICER`S O2 MASK TEST SWITCH STICKS ON WHEN TESTING THE MASK.  HAVE TO MANUALLY PUSH TO OFF POSITION.  R & R FIRST OFFICER`S OXYGEN MASK STOWAGE BOX IAW AMM 35-12-85. BOX & MASK CHECKED GOOD.

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