# SDR CA140221023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 2014
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Robsin R44RAVENII
- Aircraft time: 3,416 hours
- Engine: Lyc IO540AE1A5
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Tachometer
- Part number: C7924
- Condition: Inaccurate
- Part time: 360 hours
- 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/CA140221023

## Discrepancy

(CAN) INCORRECT READING OF DUAL TACH AT 100 PERCENT RPM.  DUAL TACH REPLACED.

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