# SDR 2005FA0001090

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2005
- Submitted: August 3, 2005
- Operation: General aviation
- Aircraft: [N1569P](https://openairdocs.org/aircraft/N1569P), registered now
- Make and model: Beech F33A
- Registry model: [Beech F33A](https://openairdocs.org/model/beech-f33a) (OpenAirDocs)
- Aircraft serial: CE1300
- Engine: Cont IO520BB
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Pump
- Part number: AA3216CW
- Part serial: 25272
- Condition: Vibrates
- Location: Engine
- Part time: 320 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005FA0001090

## Discrepancy

PILOT REPORTED WHINING NOISE COMING FROM ENGINE AND FELT A VIBRATION COMING THROUGH THE MIXTURE CONTROL CABLE.  TROUBLESHOOTING, THE MECHANIC FOUND THE AIR PUMP WAS VIBRATING.  NO PROBABLE CAUSE OR RECOMMENDATIONS AT THIS TIME.  (K)

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