# SDR FDEA201607032248

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2016
- Submitted: July 5, 2016
- Operation: Air carrier
- Aircraft: [N933FD](https://openairdocs.org/aircraft/N933FD), registered now
- Make and model: Boeing 757-21B
- Registry model: [Boeing 757-21B](https://openairdocs.org/model/boeing-757-21b) (OpenAirDocs)
- Aircraft serial: 24330
- Aircraft time: 58,661 hours, 34,279 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- 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/FDEA201607032248

## Discrepancy

DURING DESCENT THRU 11,000' AND LEVELING OFF AT 10,000' AND POWERING UP, AIR CONDITIONING PACKS CYCLED AND A FUME EVENT OCCURRED.  DIRTY SOCK ODOR UNTIL ENGINE SHUTDOWN.  T/S BOTH PACKS IAW MM 21-00-00-2 & 21-00-01.  NO FAULTS NOTED, COULD NOT DUPLICATE DISCREPANCIES.  OK FOR SERVICE.

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