# SDR JBXA0000180

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 8, 2000
- Submitted: June 9, 2000
- Operation: Air carrier
- Aircraft: [N312](https://openairdocs.org/aircraft/N312), registered now
- Make and model: Boeing 737
- Aircraft serial: 28613
- Aircraft time: 1,097 hours, 742 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Bleed Valve
- Condition: Misused
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: W, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/JBXA0000180

## Discrepancy

O2 MASK DROPPED AT 14,000 FT, CREW ALTITUDE.  BLEED VALVES WERE LEFT IN THE OFF POSITION DURING TAKEOFF.  REPLACED USED O2 GENERATORS AND REPACKED MASK.

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