# SDR CA991210093

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 1999
- Submitted: January 19, 2001
- Operation: Air carrier
- Make and model: Piper PA-31
- Registry model: [Piper PA-31](https://openairdocs.org/model/piper-pa-31) (OpenAirDocs)
- Aircraft time: 10,281 hours
- Engine: Lyc TIO540A2B
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Crankshaft
- Condition: Failed
- Location: Engine
- Component: Engine Power Sec, Lyc, TIO540A2B
- 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/CA991210093

## Discrepancy

(CAN) A SECTION OF THE CRANKSHAFT COUNTER WEIGHT LUG FAILED.

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