Accident Canadian Home Rotors Safari 400 N32CM, Wednesday 12 January 2022

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Date:	Wednesday 12 January 2022
Time:	12:40 LT
Type:	Canadian Home Rotors Safari 400
Owner/operator:
Registration:	N32CM
MSN:	CM001
Year of manufacture:	2018
Total airframe hrs:	85 hours
Engine model:	Lycoming YO-360-EXP63
Fatalities:	Fatalities: 0 / Occupants: 1
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Gallatin, Tennessee - United States of America
Phase:	Taxi
Nature:	Test
Departure airport:	Gallatin, TN
Destination airport:	Gallatin, TN
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
According to the pilot, he was performing the first flight after a condition inspection. He put the helicopter into a hover, noted the 'throttle locked up and [the helicopter] got awayâ€ from him. The helicopter rolled onto its side and impacted the ground, which resulted in substantial damage to the fuselage and tailboom. Furthermore, he reported an overspeed and 'hard vibrationâ€ prior to the rollover. A post-accident examination of the helicopter revealed no evidence of any pre-accident mechanical malfunctions or failures that would have precluded normal operation. In addition, the throttle governor was bench tested with no anomalies noted.

Probable Cause: A reported stuck throttle for reasons that could not be determined during postaccident examinations and subsequent loss of control during hover.

Accident investigation: