# SDR MALA020480

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 2002
- Submitted: August 22, 2002
- Operation: Air carrier
- Aircraft: N407XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B407
- Aircraft time: 9,407 hours, 10,374 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Motor
- Part number: 11341041
- Part serial: 445
- Condition: Malfunctioned
- Location: A/C Bay
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA020480

## Discrepancy

DURING FLIGHT 3297 AT 18,000 FT, SMOKE INFLIGHT DECK AND CABIN.  CREW HAD SMOKE GOGGLE ON, SUPPLEMENTAL A/C WAS TURNED OFF AND CONDITIONS IMPROVED.  AIR RETURN TO MEM.  MAINTENANCE INVESTIGATED AND FOUND SUPPLEMENTAL A/C COMPRESSOR MOTOR AT FAULT.  EXCESSIVELY ARCING.  MAINTENANCE REMOVED AND REPLACED SUPPLEMENTAL A/C COMPRESSOR MOTOR IAW ARR 8/8/2.

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