# SDR YV3R2019082920169

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 20, 2019
- Submitted: August 29, 2019
- Operation: General aviation
- Aircraft: [N278SH](https://openairdocs.org/aircraft/N278SH), registered now
- Make and model: Robsin R22BETAII
- Aircraft serial: 4224
- Aircraft time: 2,370 hours
- Engine: Lyc O360J2A
- System (JASC): [6240 · Main Rotor Indicating System](https://openairdocs.org/jasc/6240)
- Part: Tachometer
- Part number: A7924
- Part serial: 4600
- Condition: Faulty
- Location: Dual
- Stage of operation: TX
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YV3R2019082920169

## Discrepancy

CUSTOMER REPORTED DUAL TACHOMETER ROTOR NEEDLE BOUNCES (FAULTY) BEFORE CLUTCH IS ENGAGED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.