# SDR 96ZZZX365

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N2140](https://openairdocs.org/aircraft/N2140), registered now
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft serial: 318052105
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Fan Wheel
- Part number: 07D67
- Condition: Disintegrated
- Location: Comb Blower
- Part time: 289 hours
- Component: Janitrol
- Stage of operation: NR
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX365

## Discrepancy

FAN WHEEL DISINTEGRATED - ONLY END PLATE LEFT.  ALL VANES GONE.  MULTIPLE FAILURES OF THESE UNITS RECENTLY.  SUBMITTER STATED APPEARS TO BE CAUSED BY IMBALANCE.  FAN WHEELS USED TO COME WITH METAL BALANCE - CLIPS ON VANES.  NO LONGER COME THAT WAY.  SOME VIBRATE SO BADLY THAT COMBUSTION BLOWER MOTORS HAVE BEEN DESTROYED.

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