# SDR AT0100121

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2001
- Submitted: April 9, 2001
- Operation: Air carrier
- Aircraft: [N839AT](https://openairdocs.org/aircraft/N839AT), registered now
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47089
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Coalescer Bag
- Condition: Dirty
- Location: A/C Bay
- Stage of operation: TX
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AT0100121

## Discrepancy

AIRCRAFT HAD CHEMICAL SMELL AND AFT LEFT SMOKE DETECTORS SOUNDED.  REPLACED BOTH COALESCER BAGS AND RAN ENGINES.

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