# SDR USAA2012030600006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 2012
- Submitted: March 6, 2012
- Operation: Air carrier
- Aircraft: N531AU
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 24478
- Aircraft time: 65,116 hours, 41,244 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct Clamp
- Condition: Loose
- Location: Ac System
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2012030600006

## Discrepancy

CREW REPORTED A STRONG DIRTY SOCK SMELL ON AIRCRAFT IN DESCENT BELOW 6,000 FEET LANDING.  MAINTENANCE ACCOMPLISHED J/C 03L00021001, "737 TROUBLESHOOT CABIN ODOR".  J/C 03L00036001 NOT REQUIRED.  REMOVED AND REPLACED HEPA FILTERS PER J/C 03L00021001.  FOUND SEPARATED A/C DUCT IN FORWARD CARGO BIN AFT CEILING LT SIDE.  RE-SECURED DUCT CLAMP.  LEAK CHECK GOOD.  NO SMELLS NOTED.

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