# SDR 2023F00015

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2023
- Submitted: January 4, 2023
- Operation: General aviation
- Aircraft: [N431HC](https://openairdocs.org/aircraft/N431HC), registered now
- Make and model: Agusta AW109SP
- Registry model: [Agusta AW109SP](https://openairdocs.org/model/agustawestland-aw109sp) (OpenAirDocs)
- Aircraft serial: 22404
- Aircraft time: 313 hours
- System (JASC): [6700 · Rotorcraft Flight Control](https://openairdocs.org/jasc/6700)
- Part: Coupler
- Condition: Debonded
- Location: Drive Shaft
- Part time: 313 hours, 990 cycles
- Component: Drive Shaft
- Component part number: 1098412023
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2023F00015

## Discrepancy

#2 DRIVE SHAFT COUPLER APPEARS TO HAVE BECOME DEBONDED, AND THE ANTI-SLIPPAGE PIN CANNOT ROTATE, INDICATING A POTENTIAL SLIPPAGE.

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