# SDR CALA2017070802116

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 2017
- Submitted: July 10, 2017
- Operation: Air carrier
- Aircraft: [N53441](https://openairdocs.org/aircraft/N53441), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 30131
- Aircraft time: 26,986 hours, 9,003 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MF20003
- Part serial: 8926
- Condition: Broken
- Location: Captain'S
- Part time: 17,291 hours, 5,999 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2017070802116

## Discrepancy

OXYGEN LEAK.. CAPTAIN`S MASK BROKEN.  EMERGENCY DECLARED.  REMOVED AND REPLACED THE CAPTAIN'S OXYGEN MASK IAW AMM 35-12-85. NO LEAK S NOTED. ALSO REMOVED AND REPLACED CREW OXYGEN BOTTLE IAW AMM 12-15- 21, AS A PRECAUTION. LEAK CHECKED GOOD.

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