# SDR AU010059

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2001
- Submitted: March 20, 2001
- Operation: General aviation
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- Engine: Pwa PT6T3B
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Bolt
- Part number: 2006505008
- Condition: Worn
- Location: Tail Rotor Drive
- Part time: 2,418 cycles
- 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/AU010059

## Discrepancy

(AUS) TAIL ROTOR DRIVESHAFT TO TAIL ROTOR GEARBOX INPUT COUPLING BOLT SEPARATED. MARKS ON BOLT INDICATE THAT IT HAD BEEN LOOSE FOR SOME TIME.

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