# SDR 99ZZZX638

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N198DA](https://openairdocs.org/aircraft/N198DA), registered now
- Make and model: Diamon DA20-A1
- Registry model: [Diamon DA20-A1](https://openairdocs.org/model/diamond-aircraft-ind-da20-a1) (OpenAirDocs)
- Aircraft serial: 10058
- System (JASC): [8300 · Accessory Gearboxes](https://openairdocs.org/jasc/8300)
- Part: Clutch
- Part number: 887270
- Condition: Failed
- Location: Gearbox
- Part time: 296 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/99ZZZX638

## Discrepancy

EXCESSIVE VIBRATION AND ROUGH RUNNING ENGINE WAS EVENTUALLY TRACKED DOWN TO REDUCTION GEARBOX CLUTCH FAILURE.  CLOSE INSPECTION OF GEARBOX CLUTCH PER MM AT FREQUENT INTERVALS.

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