# SDR UALA2012110806436

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2012
- Submitted: November 28, 2012
- Operation: Air carrier
- Aircraft: N179UA
- Make and model: Boeing 747422
- Aircraft serial: 25158
- Aircraft time: 89,986 hours, 18,034 cycles
- Engine: Pwa PW4056
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Bottle
- Condition: Low Pressure
- Location: Crew O2
- Stage of operation: NR
- 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/UALA2012110806436

## Discrepancy

CREW REPORTED, CREW O2 READS 1520 PSI, PASS O2 READS 1570 PSI.  REMOVED CYLINDERS AND SERVICED CREW O2 TO 1750 PSI AND PASS O2 TO 1680 PSI IN SYSTEM.

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