# SDR 99ZZZX529

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 15, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Engine: Lyc O320H2AD
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Pin
- Part number: SL134441
- Condition: Worn
- Location: Piston
- Component: Supairpart
- 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/99ZZZX529

## Discrepancy

EXCESSIVE PIN WEAR IN WALL OF CYLINDER IN 1,541 HOURS TOTAL TIME.  ALL FOUR CYLINDERS WERE NEW STEEL CYLINDERS.  ENGINE IS O320-H2AD.  ENGINE PULLED  BECAUSE OF CRACKED CASE.

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