# SDR 97ZZZX1134

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 5, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Engine: Allsn 250C20B
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Gearshaft
- Part number: 6854857A
- Condition: Worn
- Location: Tach Drive
- Part time: 4,889 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX1134

## Discrepancy

TACH DRIVE END WORN ABOUT .040 INCH.  SUBMITTER STATED FOUND ABOUT 50 PERCENT OF ALL THE GEARS ARE FOUND WORN WHEN INSPECTED.

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