# SDR UALA2012092705456

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2012
- Submitted: September 28, 2012
- Operation: Air carrier
- Aircraft: [N784UA](https://openairdocs.org/aircraft/N784UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26951
- Aircraft time: 69,117 hours, 9,715 cycles
- Engine: Pwa PW40903
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Bellows
- Condition: Torn
- Location: Ac Bay
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012092705456

## Discrepancy

ODOR IN THE CABIN-FD.  DUE TO HISTORY OF ODOR IN THE CABIN-FD.  REPLACED TORN BELLOW ON FLEXIBLE SURGE DUCT.  REF AMM FOR VALVE REMOVED AND REPLACED.  REMOVED APU SOV & INSPECTED UPSTREAM & DOWNSTREAM OF VALVE.  NO OIL CONTAMINATION NOTED, DUCT CLEAN.  RE-INSTALLED APU SOV.

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