# SDR 2007UALA02748

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 19, 2007
- Submitted: July 24, 2007
- Operation: Air carrier
- Aircraft: [N225UA](https://openairdocs.org/aircraft/N225UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30554
- Aircraft time: 20,823 hours, 2,736 cycles
- Engine: Pwa PW4090
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen System
- Condition: Reads Low
- Location: Crew
- Stage of operation: IN
- How discovered: C
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA02748

## Discrepancy

FOUND CREW OXYGEN PRESSURE READING 710 PSI.   [08-14-07]   REPRESSURIZED CREW O2 CYLINDERS MANY TIMES.  AFTER TROUBLESHOOTING, REPLACEMENT OF THE O2 MASK STOWAGE BOX RESOLVED PROBLEM.  NO RECURRENCE. AIRPLANE OK FOR SERVICE.

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