# SDR FDEA201403220543

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 22, 2014
- Submitted: March 24, 2014
- Operation: Air carrier
- Aircraft: N559FE
- Make and model: Doug MD-10-10F
- Registry model: [Doug MD-10-10F](https://openairdocs.org/model/mcdonnell-douglas-md-10-10f) (OpenAirDocs)
- Aircraft serial: 46930
- Aircraft time: 97,426 hours, 31,499 cycles
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Coalescer Bag
- Condition: Dirty
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: F, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA201403220543

## Discrepancy

PASSING FL 310,  CARGO FIRE FLASHING, DISCHARGE SWITCH TURNED ON AFT SIDE.  EMERGENCY RETURN TO DEPARTURE.  APU OIL SUSPECTED OF CONTAMINATING NR 2 BLEED AIR DUCT.  PERFORMED PACK & DISTRIBUTION ODOR CLEARING PROCEDURE IAW MM 21-53-00-7.  RAN NR 2 ENG & USED NR 2  BLEED AIR TO SUPPLY NR 2 PACK.  BLEED AIR DUCT REACHED 100 C WITH NO SMOKE OR ODOR DETECTED.    REPLACED 1 & 3 COALECER BAGS IAW MM 21-54-03-2.

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