# SDR QR9R2024071600001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 16, 2024
- Submitted: July 16, 2024
- 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: 10721789431
- Aircraft time: 3,911 hours
- System (JASC): [6340 · Rotor Drive Indicating System](https://openairdocs.org/jasc/6340)
- Part: Transmitter
- Part number: SSTUVEURC21S
- Part serial: 1119
- Condition: Failed
- Location: Main Rotor
- Stage of operation: IN
- 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/QR9R2024071600001

## Discrepancy

SENSOR SIGNAL TRANSMITTING UNIT WAS RECEIVED NEW FROM AIRBUS. DURING MAST MOMENT PART 2 ADJUSTMENT- UNABLE TO MAINTAIN MAST MOMENT MINIMIZED BELOW 10%. MAST MOMENT FLUCTUATES MORE THAN 10% AFTER BEING MINIMIZED AS LOW AS 3% ON THE GROUND AT FLIGHT IDLE. SUBBED IN SSTU FOR TROUBLESHOOTING AND ACFT PASSED.

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