# SDR QR9R2023052500003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2023
- Submitted: May 25, 2023
- Operation: General aviation
- 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: 15723899769
- Aircraft time: 3,324 hours
- System (JASC): [7700 · Engine Indicating System](https://openairdocs.org/jasc/7700)
- Part: Indicator
- Part number: B771M40C1005
- Part serial: 702
- Condition: Failed
- Stage of operation: CR
- How discovered: V
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QR9R2023052500003

## Discrepancy

TRIPLE TACHOMETER FAILED IN FLIGHT. REMOVED AND REPLACED TRIPLE INDICATOR; MOC SUCCESSFULLY COMPLETED.

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