# SDR 96ZZZX1513

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N252MA](https://openairdocs.org/aircraft/N252MA), registered now
- Make and model: Piper PA-31P
- Registry model: [Piper PA-31P](https://openairdocs.org/model/piper-pa-31p) (OpenAirDocs)
- Aircraft serial: 31P33
- System (JASC): [3710 · Vacuum Distribution System](https://openairdocs.org/jasc/3710)
- Part: Pump
- Part number: 842CW
- Condition: Shaft Failed
- Location: Vac Drive
- Part time: 275 hours
- Component: Airborne
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX1513

## Discrepancy

DRIVE COUPLING SHEARED FOLLOWING PUMP FAILURE.  PUMPS SEEM TO ONLY RUN ABOUT 400 HOURS PRIOR TO FAILURE.  SUBMITTER HAS 5 AIRCRAFT RUNNING 2 EACH PER AIRCRAFT.

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