# SDR CALA2015040800259

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2015
- Submitted: April 8, 2015
- Operation: Air carrier
- Aircraft: [N28457](https://openairdocs.org/aircraft/N28457), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 41744
- Aircraft time: 8,881 hours, 3,055 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MF20003
- Part serial: 69670
- Condition: Broken
- Location: Cockpit
- 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/CALA2015040800259

## Discrepancy

CREW CALL WITH DISPATCH, CREW O2 DOWN TO 2000 LBS, CANNOT DISCONNECT.  DIVERT, FOUND FIRST OFFICERS O2 MASK LINE BROKE.  R & R FIRST OFFICERS CREW O2 MASK.  OPERATIONS CHECKED OK IAW 35-12-85.  SERVICED CREW O2 BOTTLE IAW GMM 11-35-30.  ROTABLE PARTS CHANGE WAS INDICATED.  TT 1705402, SN OFF 09670 MASK, OXYGEN, C OFF 25-3512-9-9050 9670 ON 0000.

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