# SDR YV3R2023120100590

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2023
- Submitted: December 1, 2023
- Operation: General aviation
- Filed by: [Robinson Helicopter Company Inc, repair station YV3R012M](https://openairdocs.org/faa-repair-station/YV3R012M/robinson-helicopter-company-inc.md) (OpenAirDocs)
- Aircraft: VH-ZR
- Make and model: Robsin R44
- Aircraft serial: 2683
- Aircraft time: 117 hours
- Engine: Lyc O540F1B5
- System (JASC): [6240 · Main Rotor Indicating System](https://openairdocs.org/jasc/6240)
- Part: Dual Tachometer
- Part number: C7925
- Part serial: L2110432
- Condition: Defective
- Location: Unknown
- Part time: 117 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YV3R2023120100590

## Discrepancy

CUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY P/N: C792-5 ENGINE NEEDLE WAS OVERREADING 2%.

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