# SDR SWAA982977

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N721WN
- Make and model: Boeing 737-2T4
- Registry model: [Boeing 737-2T4](https://openairdocs.org/model/boeing-737-2t4) (OpenAirDocs)
- Aircraft serial: 22697
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Coalescer
- Condition: Dirty
- Location: Lt Acm
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA982977

## Discrepancy

DURING CRUISE, CREW DETECTED A STRONG UNIDENTIFIABLE SMELL IN COCKPIT AND CABIN.  DESCENDED TO 24,000 AND ISOLATED LEFT PACK.  ODOR DISSAPATED, CONTINUED PER MEL 21-1.  REPLACED COALESOR BAG AND SERVICED AIR CYCLE MACHINE PER BOEING M/M.

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