# SDR DXTA201105120479

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 12, 2011
- Submitted: May 13, 2011
- Operation: Air carrier
- Aircraft: [N149QS](https://openairdocs.org/aircraft/N149QS), registered now
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK473
- Aircraft time: 2,044 hours, 1,956 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Condition: Noisy
- Location: Cabin
- Stage of operation: CR
- How discovered: O
- Nature of condition: E, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA201105120479

## Discrepancy

BLOWER AND FREON AIR SYSTEM MAKES A NOTICABLE GRINDING/ BUZZING SOUND ACCOMPANIED BY A FRICTION/BURNING ODOR. IT IS MOST APPARENT AT THE AIR EXHAUST. THIS WORSENS THE LONGER IT RUNS.

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