# SDR 2007UALA04386

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2007
- Submitted: October 26, 2007
- Operation: Air carrier
- Aircraft: N921UA
- Make and model: Boeing 737522
- Aircraft serial: 25388
- Aircraft time: 43,426 hours, 31,515 cycles
- Engine: Cfmint CFM563C1
- System (JASC): [3500 · Oxygen System](https://openairdocs.org/jasc/3500)
- Part: Oxygen System
- Condition: Low
- Stage of operation: IN
- How discovered: O
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA04386

## Discrepancy

THE O2 REQUIRES SERVICING.  SERVICED CREW O2 SYSTEM.  NO REPEATS.

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