# SDR QR9R2022101900002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 19, 2022
- Submitted: October 19, 2022
- Operation: Air carrier
- Filed by: [M1 Support Services, repair station QR9R369D](https://openairdocs.org/faa-repair-station/QR9R369D/m1-support-services.md) (OpenAirDocs)
- Make and model: Bolkms BK117C2
- Aircraft serial: 08720839273
- Aircraft time: 3,425 hours
- System (JASC): [6240 · Main Rotor Indicating System](https://openairdocs.org/jasc/6240)
- Part: Indicator
- Part number: B771M40C1005
- Part serial: 251
- Condition: Intermittent
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R2022101900002

## Discrepancy

DURING FLIGHT, TRIPLE TACH INTERMITTENT FAILURE. REPLACED TRIPLE TACH IAW 62-41-00,4-3. COMPLETED GROUND RUN AND FLIGHT IAW THE RFM. NO DISCREPANCIES NOTED.

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