# SDR HNAA2013112700593

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 27, 2013
- Submitted: November 27, 2013
- Operation: Air carrier
- Aircraft: N838EN
- Make and model: Dhav DHC8102
- Aircraft serial: 220
- Aircraft time: 50,510 hours, 57,165 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Condition: Failed
- Stage of operation: TX
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2013112700593

## Discrepancy

ACM FAILED AND NOISES ARE HEARD WHEN APU OR ENGINE BLEED IS SELECTED ON.

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