# SDR 2009FA0000463

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2009
- Submitted: June 3, 2009
- Operation: General aviation
- Aircraft: [N786MS](https://openairdocs.org/aircraft/N786MS), registered now
- Make and model: Piper PA-34-220T
- Registry model: [Piper PA-34-220T](https://openairdocs.org/model/piper-pa-34-220t) (OpenAirDocs)
- Aircraft serial: 3449114
- Engine: Cont TSIO360RB
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Crankshaft
- Part number: 653136
- Part serial: N06FA404
- Condition: Cracked
- Location: Prop Flange
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2009FA0000463

## Discrepancy

DURING ANNUAL INSP, OIL WAS FOUND AT FRONT OF ENGINE.  FURTHER INVESTIGATION REVEALED A CRACK OF THE CRANKSHAFT AT THE PROP MOUNTING FLANGE.  CAUSE HAS NOT BEEN DETERMINED.  (K)

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