# SDR USAA2013061400015

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 2013
- Submitted: June 14, 2013
- Operation: Air carrier
- Aircraft: N454UW
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24996
- Aircraft time: 60,267 hours, 39,383 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Condition: Unserviceable
- Location: Ac Bay
- Stage of operation: NR
- 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/USAA2013061400015

## Discrepancy

FORWARD F/A REPORTED A BURNING SMELL SIMILAR TO A RAG BURNING IN FIRST CLASS.  MX COMPLIED WITH TROUBLESHOOTING CABIN ODOR 737, JOB CARD 03L00021001.  R & R RECIRCULATION FAN HEPA FILTERS IAW AMM 21-21-23-404-059 AND AMM 21-21-23-004-055.

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