# SDR DALA2017090506623

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2017
- Submitted: September 5, 2017
- Operation: Air carrier
- Aircraft: [N543US](https://openairdocs.org/aircraft/N543US), registered now
- Make and model: Boeing 757251
- Aircraft serial: 26490
- Aircraft time: 65,590 hours, 26,084 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Condition: Leaking
- Location: Cockpit
- Stage of operation: CR
- 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/DALA2017090506623

## Discrepancy

DIV TO OKC DUE TO CREW OXYGEN SLOWLY DECREASING AND DOWN TO 240 PSI.  MTC FOUND OBS SEAT O2 MASK IN EMERGENCY, REPLACED OBS O2 STORAGE BOX. FOUND F/O O2 MASK LEAKING AT STORAGE BOX, REPLACED MASK AND STORAGE BOX. REPLACED O2 BOTTLE LEAK CHECKS GOOD.

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