# SDR AU960175

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Bac 146100A
- Engine: Lyc ALF502R3A
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Gear
- Part number: 86A002
- Condition: Separated
- Location: T Eng Aux Drive
- Component: Lyc, ALF502R3A
- Stage of operation: CR
- Nature of condition: E, K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU960175

## Discrepancy

(AUS) ENGINE ACCESSORY GEARBOX INPUT BEVEL GEAR SEPARATED FROM MOUNTINGFLANGE - BOLTS WERE STILL ATTACHED TO THE GEAR AND BEARING HOUSING - FOUND WHEN ENGINE STRIPPED FOLLOWING OIL PRESSURE LOSS - SUSPECT CAUSED BY INSUFFICIENT BACKLASH BETWEEN THE SPIRAL INPUT GEAR AND THE BEVEL GEAR DURING INSTALLATION

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