# SDR AU970243

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Propeller: Hartzl HCE3YR2
- System (JASC): [2822 · Fuel Boost Pump](https://openairdocs.org/jasc/2822)
- Part: Pump
- Part number: 421136
- Condition: Failed
- Location: Fuel Boost Pump
- Component: Weldon, 421136
- Stage of operation: DE
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU970243

## Discrepancy

(AUS) FUEL BOOST PUMP FAULTY - INVESTIGATION FOUND ONE OF THE MOTOR BRUSHES WORN AWAY - A COUPLING SPLINE BETWEEN THE MOTOR AND THE PUMP WAS BADLY WORN - PUMP BLADE SUPPORT BLOCK BADLY WORN - COMMUTATOR DAMAGED DUE TO LOSS OF BRUSH

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