# SDR 96ZZZX3414

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N710AL](https://openairdocs.org/aircraft/N710AL), registered now
- Make and model: Skrsky S76A
- Aircraft serial: 760279
- Engine: Allsn 250C30S
- System (JASC): [7210 · Turbine Engine Reduction Gear](https://openairdocs.org/jasc/7210)
- Part: Bearing
- Part number: 23030917
- Condition: Worn
- Location: Pinion
- Component: 23035179
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX3414

## Discrepancy

THE ENGINE CHIP DETECTOR LIGHT ILLUMINATED IN-FLIGHT.  THE TEAR-DOWN INSPECTION OF THE ENGINE REVEALED THE NR 3 AND NR 4 PINION BEARINGS ROLLER CAGES WERE EXCESSIVELY WORN.  THESE BEARINGS ONLY HAVE 489.1 OPERATING HOURS SINCE NEW.  THE OPERATOR BELIEVES THE 'NEW STYLE' BEARINGS ARE MADE OF A SOFTER MATERIAL.

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