# SDR FDEA202607110913

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 11, 2026
- Submitted: July 13, 2026
- Operation: Air carrier
- Aircraft: [N901FD](https://openairdocs.org/aircraft/N901FD), registered now
- Make and model: Boeing 757-2B7
- Registry model: [Boeing 757-2B7](https://openairdocs.org/model/boeing-757-2b7) (OpenAirDocs)
- Aircraft serial: 27122
- Aircraft time: 60,616 hours, 29,063 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Condition: Odor
- Location: Zone 100
- Stage of operation: DE
- How discovered: V
- Nature of condition: B
- Precautionary procedure: G
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202607110913

## Discrepancy

FUME EVENT DESCEND THROUGH 20-25K. IT WAS A DIRTY  OILY SOCK SMELL.  PERFORMED INSPECTION OF HIGH PRESSURE DUCT & INTERMEDIATE PRESSURE DUCT  ON BOTH ENGINES.   REMOVED AND REPLACED LEFT WATER EXTRACTOR ASSY LEAK AND OPS CHECK GOOD. REMOVED AND REPLACED LEFT PACK TEMP CONTROL VALVE.

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