# SDR 99ZZZX51

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N725RH](https://openairdocs.org/aircraft/N725RH), registered now
- Make and model: Cessna 550
- Registry model: [Cessna 550](https://openairdocs.org/model/cessna-550) (OpenAirDocs)
- Aircraft serial: 5500006
- Engine: Pwa JT15D1
- System (JASC): [7210 · Turbine Engine Reduction Gear](https://openairdocs.org/jasc/7210)
- Part: Gearbox
- Condition: Failed
- Location: Rt Engine
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX51

## Discrepancy

RIGHT ENGINE SHUT DOWN IN CRUISE FLIGHT AT 24,000 FEET.  PRECAUTIONARY LANDING.  POSSIBLE ENGINE GEARBOX PROBLEM STILL UNDER INVESTIGATION.  FAILURE OF LOCK WASHER ON UPPER TOWER SHAFT DUPLEX BEARING.  OVERHAUL OCCURRED 2,236 HOURS AGO.

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