# SDR 98ZZZX1709

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [Executive Aviation, repair station ABOR475B](https://openairdocs.org/faa-repair-station/ABOR475B/executive-aviation.md) (OpenAirDocs)
- Aircraft: [N12ED](https://openairdocs.org/aircraft/N12ED), registered now
- Make and model: Cessna 414
- Registry model: [Cessna 414](https://openairdocs.org/model/cessna-414) (OpenAirDocs)
- Aircraft serial: 4140521
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Dowel Pin
- Part number: 535634
- Condition: Sheared
- Location: Tachometer Drive
- Part time: 988 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/98ZZZX1709

## Discrepancy

RIGHT ENGINE TACHOMETER INTERMITTENT.  ALWAYS ACTED FINE ON GROUND RUN-UP.  AFTER SOME TROUBLESHOOTING, FOUND THE DOWEL PIN THAT HOLDS ONE BEVEL GEAR TO THE TACHOMETER DRIVE GEAR SHEARED.

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