# SDR UALA2010022400693

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 24, 2010
- Submitted: February 24, 2010
- Operation: Air carrier
- Aircraft: [N182UA](https://openairdocs.org/aircraft/N182UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 25279
- Aircraft time: 78,042 hours, 9,558 cycles
- Engine: Pwa PW4056
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Valve
- Part number: 02120007
- Condition: Leaking
- Location: Crew Oxygen Syst
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010022400693

## Discrepancy

CREW OXYGEN LEAK.  FOUND CREW OXYGEN SYSTEM CHECK VALVE LEAKING INTERNALLY BACK TO FILL VALVE.  REMOVED FILL CAP & FOUND PRESSURE BUILT UP IN LINE.  AOG'D ANOTHER CHECK VALVE 642-3246 AOG R5726.  RE-CHECKED CREW PSI AFTER REMOVED & REPLACED SAME VALVE FOR INSPECTION.  PAX O2 BOTTLE CHECK VALVE REPLACED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.