# SDR 2008UALA05575

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2008
- Submitted: September 26, 2008
- Operation: Air carrier
- Aircraft: N551UA
- Make and model: Boeing 757222
- Aircraft serial: 25399
- Aircraft time: 64,129 hours, 18,520 cycles
- Engine: Pwa PW2037
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: S161N3001
- Condition: Faulty
- Location: Recirc Sys
- Stage of operation: DE
- 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/2008UALA05575

## Discrepancy

MUSTY SMELL IN CABIN.   WHILE TROUBLESHOOTING FOUND LEFT FILTER NEW AND ALL DUCTS CLEAN.  RIGHT RECIRC FILTER IS FAULTY.  REPLACED RT RECIRC FILTER.

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