# SDR 2007UALA05214

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 24, 2007
- Submitted: December 26, 2007
- Operation: Air carrier
- Aircraft: [N221UA](https://openairdocs.org/aircraft/N221UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30552
- Aircraft time: 25,613 hours, 3,421 cycles
- Engine: Pwa PW4090
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Contaminated
- Location: Apu Bay
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA05214

## Discrepancy

RTFL DUE TO SMOKE ODOR ON FLIGHT DECK.   AFTER LENGTHY TROUBLESHOOTING, DETERMINED ODOR DUE TO OIL SPLASHED IN APU INLET.   APU ASSY REPLACED PER AMM49-11-01 PG401.   PERFORMED PACK BURNOUT,  NO FURTHER REPORT OF ODOR.

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