# SDR CA131111003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 2013
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft time: 2,291 hours
- Engine: Lyc IO360L2A
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Tachometer
- Part number: S33295
- Condition: Reads Low
- Location: Engine
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA131111003

## Discrepancy

(CAN) UPON GROUND RUN,  TACHOMETER FOUND TO BE READING LOW BY 300 RPM. TACHOMETER REPLACED NEW.

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