# SDR 96ZZZX5901

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N18MC
- Make and model: Piper PA-31P
- Registry model: [Piper PA-31P](https://openairdocs.org/model/piper-pa-31p) (OpenAirDocs)
- Aircraft serial: 31P7300143
- Engine: Lyc TIGO541E1A
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Dowel
- Part number: 75359
- Condition: Loose
- Location: Crankshaft
- Part time: 3,235 hours
- Component: 75670
- 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/96ZZZX5901

## Discrepancy

FOUND DOWEL FOR CRANKSHAFT SPLINE BUSHING IN SUMP AT OIL SCREEN.  UPON TEAR DOWN FOUND ONLY 1 OF 3 DOWELS STILL IN CRANKSHAFT.  BUSHING WAS STARTING TO TWIST IN BETWEEN CRANKSHAFT AND SPLINE BUSHING.  NO OTHER INDICATION OF PROBLEMS.  ENGINE RAN GOOD, FILTER WAS CLEAR.

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