# SDR QMLA2020090820046

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 7, 2020
- Submitted: September 8, 2020
- Operation: Air carrier
- Aircraft: [N941AM](https://openairdocs.org/aircraft/N941AM), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 54594
- Aircraft time: 1,548 hours, 3,900 cycles
- Engine: Allsn 250C47B
- Engine time: 1,548 hours, 3,945 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Motor
- Part number: S6102EC4
- Condition: Odor
- Location: Blower
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2020090820046

## Discrepancy

DURING A RETURN-TO-BASE LEG IN LEVEL CRUISE THE MED CREW NOTED A MILD BURNT ELECTRICAL SMELL COMING FROM THE AIR-CONDITIONER VENTS.  THE PILOT TURNED OFF THE AIR-CONDITIONER AND THE SMELL DISSIPATED.  UPON EVALUATION BY MAINTENACE THE AFT BLOWER MOTOR WAS INOP.  THE MOTOR WAS REPLACED THE AC WAS RETURNED TO SERVICE.

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