# SDR YV3R2019101220200

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2019
- Submitted: October 12, 2019
- Operation: General aviation
- Aircraft: [N449BA](https://openairdocs.org/aircraft/N449BA), registered now
- Make and model: Robsin R44
- Aircraft serial: 2265
- Aircraft time: 2,200 hours
- Engine: Lyc O540F1B5
- System (JASC): [6240 · Main Rotor Indicating System](https://openairdocs.org/jasc/6240)
- Part: Tachometer
- Part number: C7924R
- Part serial: 4751
- Condition: Malfunctioned
- Location: Dual
- 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/YV3R2019101220200

## Discrepancy

CUSTOMER REPORTED DUAL TACHOMETER P/N: ROTOR NEEDLE JUMPS AND THEN GOES INOPERATIVE.

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