# SDR 2025FA0000647

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 12, 2025
- Submitted: September 16, 2025
- Operation: General aviation
- Aircraft: [N240SF](https://openairdocs.org/aircraft/N240SF), registered now
- Make and model: Bolkms BK117C2
- Aircraft serial: 9403
- Aircraft time: 9,144 hours, 25,211 cycles
- System (JASC): [6710 · Main Rotor Control](https://openairdocs.org/jasc/6710)
- Part: Vartoms
- Condition: Faulted
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2025FA0000647

## Discrepancy

VARTOMS SYSTEM KICKED INTO MANUAL MODE AS ENGINES COULDN'T HOLD TORQUE MATCHING AT THE SPECIFIC POWER SETTING.  SYSTEM WAS TROUBLESHOT AND FOUND TO BE WITHIN ALL PARAMETERS.  NO DEFECTS NOTED DURING TEST FLIGHTS.

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