# SDR 2002FA0001191

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 3, 2002
- Submitted: October 18, 2002
- Operation: General aviation
- Aircraft: [N837KS](https://openairdocs.org/aircraft/N837KS), registered now
- Make and model: Beech C 23
- Registry model: [Beech C 23](https://openairdocs.org/model/beech-c-23) (OpenAirDocs)
- Aircraft serial: M2076
- Engine: Lyc O360A4K
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Lock
- Part number: 61156
- Condition: Overtorqued
- Location: Crankshaft
- Stage of operation: IN
- How discovered: V
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2002FA0001191

## Discrepancy

LOCKPLATE FOR CRANKSHAFT GEAR RETAINING BOLT NOT SUFFICIENTLY BENT ALLOWING CRANKSHAFT GEAR BOLT TO LOOSEN.  CRANKSHAFT GEAR DOWEL PIN SHEARED.  RECOMMENDATION TO PREVENT RECURRENCE:  CRANKSHAFT GEAR BOLT TORQUE SHOULD BE VERIFIED AT 204IN/LBS AND LOCKPLATE INSPECTED TO ENSURE PROPER LOCKING OF THE PLATE AGAINST THE BOLT HEAD.

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