# SDR 8MHR201611180298

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 2016
- Submitted: November 18, 2016
- Operation: General aviation
- Filed by: [Keystone Turbine Services, LLC, repair station 8MHR895B](https://openairdocs.org/faa-repair-station/8MHR895B/keystone-turbine-services-llc.md) (OpenAirDocs)
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Gear
- Part number: M25010562
- Part serial: NN526912
- Condition: Fractured
- Location: Gearbox
- Part time: 274 hours, 276 cycles
- Component: Gearbox, Rroyce, C47B
- Component part number: 23063393
- 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/8MHR201611180298

## Discrepancy

GEAR SHAFT LARGE DIAMETER GEAR WAS FOUND TO HAVE A PIECE OF ONE OF THE GEAR TEETH MISSING, AND ANOTHER GEAR TOOTH COMPLETELY BROKEN OFF.

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