Accident Eurocopter EC 145 N140SF, Thursday 12 October 2017
ASN logo
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Date:Thursday 12 October 2017
Type:Silhouette image of generic EC45 model; specific model in this crash may look slightly different    
Eurocopter EC 145
Owner/operator:OSF Aviation
Registration: N140SF
MSN: 9389
Year of manufacture:2010
Total airframe hrs:3156 hours
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Location:Canton, IL -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Peoria-Greater Peoria Airport, IL (PIA/KPIA)
Destination airport:Canton Airport, SD (CTK)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The helicopter flight instructor reported that he was training a new company pilot at night, and they were using night vision goggles. He added that, while in a hover, he attempted to demonstrate the use of the controllable search light to the pilot in the right seat.
The flight instructor added that, “to adjust the light, I took the [left] cyclic in my left hand which would normally be holding the left collective and attempted to reach the control switch for the light and grabbed the throttles of the right collective with my right hand. My right hand would normally be on the left cyclic.” He further added that he then inadvertently pushed down on the collective, and the helicopter began to settle on the runway. He reported that in response “[his] reflex was to pull up with [his] left hand (which would normally be on the collective),” and when he did so the helicopter moved rearward. Subsequently, he “pushed the cyclic forward to correct” the rearward movement, but in doing so, the helicopter touched down hard, and the main rotor impacted the upper wire strike protection unit.
The main rotor sustained substantial damage.
The flight instructor reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Probable Cause: The flight instructor's incorrect cyclic control during a hover, which resulted in a hard landing.

Accident investigation:
Investigating agency: NTSB
Report number: GAA18CA012
Status: Investigation completed
Duration: 4 months
Download report: Final report




Revision history:

22-Feb-2018 19:39 ASN Update Bot Added
05-Dec-2023 16:51 harro Updated [Other fatalities, Departure airport, Destination airport, Narrative]
16-Mar-2024 09:01 ASN Updated [Accident report]

Corrections or additions? ... Edit this accident description

The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF on social media FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2024 Flight Safety Foundation

1920 Ballenger Av, 4th Fl.
Alexandria, Virginia 22314