# SDR CA961112048

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Diamon DA20-A1
- Registry model: [Diamon DA20-A1](https://openairdocs.org/model/diamond-aircraft-ind-da20-a1) (OpenAirDocs)
- Engine: Rotax ROTAX912
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Valve
- Part number: R854116
- Condition: Worn
- Location: Exhaust
- Part time: 898 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/CA961112048

## Discrepancy

(CAN) EXHAUST VALVE STEM FOUND WORN. SUSPECT BUILD UP OF CARBON POSSIBLY DUE TO A COMBINATION 100 LOW LEAD FUEL AND SYNTHETIC OIL USAGE. TECHNICAL BULLETIN 912-13 ADDRESSES THIS PROBLEM.

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