# SDR USAA20101007SB157

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2010
- Submitted: October 7, 2010
- Operation: Air carrier
- Aircraft: N529AU
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 24411
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Coalescer Bag
- Condition: Dirty
- 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/USAA20101007SB157

## Discrepancy

CLT - PILOT REPORTED A STRONG MILDEW ODOR/STALE AIR IN THE CABIN.  FLIGHT CREW WAS ABLE TO ISOLATE THE ODOR COMING FROM THE LEFT PACK.  MAINTENANCE REMOVED AND REPLACED DIRTY WATER SEPARATOR BAGS PER MM 21-51-41-404.  OPERATIONAL CHECK AND LEAK CHECK GOOD.

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