# SDR FDEA201507042153

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 4, 2015
- Submitted: July 6, 2015
- Operation: Air carrier
- Aircraft: [N610FE](https://openairdocs.org/aircraft/N610FE), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48603
- Aircraft time: 722 hours, 17,023 cycles
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Coalescer Bag
- Part number: 1879421
- Condition: Dirty
- Location: Ac Bay
- 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/FDEA201507042153

## Discrepancy

EXPERIENCED FUME EVENT ON DESCENT, SMELL WAS DIRTY SOCK OR MOLDED CHEESE TYPE.  CAPTAIN WILL FILE A FLIGHT SAFETY REPORT SINCE FUME EVENT CAN  RELEASE TOXIC SUBSTANCES INTO THE AIR.  INSPECTED PACK BAY'S 1, 2 & 3, FOUND DIRTY & WET COALESCER SOCKS.  R & R PACKS 1, 2 & 3 COALESCER SOCKS IAW AMM 21-54-05-2.  ALSO PERFORMED OPERATIONAL CHECK ON ALL THREE PACKS IAW AMM 21-00-00-0.  NO FUMES OR ODOR SMELL PRESENT.  AIR FLOW CHECKED NORMAL DISPLAYED ON AIR SYNOPTIC PAGE.

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