# SDR CA041124011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2004
- Submitted: January 5, 2005
- Operation: General aviation
- Make and model: Aerosp ATR72
- Engine: Pwa PW124B
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Drive Assy
- Condition: Fractured
- Location: Gearbox
- Stage of operation: CR
- How discovered: O
- Nature of condition: X, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA041124011

## Discrepancy

(CAN) DURING CRUISE, ENGINE OIL PRESSURE DROPPED TO ZERO FOLLOWED BY AN UNCOMMANDED ENGINE SHUTDOWN.  A SINGLE ENGINE LANDING WAS CARRIED OUT AT DESTINATION.  SUBSEQUENT INVESTIGATION HAS EVIDENCED A FRACTURED (ACCESSORY GEARBOX DRIVE) TOWERSHAFT.  PWA WILL INVESTIGATE THE EVENT AND REVISE THIS REPORT TO REFLECT ROOT CAUSE, ONCE DETERMINED.

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