Pilot Debrief

ROBINSON HELICOPTER COMPANY R44 II near Charles City, IA — 2023-07-26

Final reportCEN23LA326
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Date
2023-07-26
Location
Charles City, IA, USA
Aircraft
ROBINSON HELICOPTER COMPANY R44 II
Registration
N4174L
Category
Helicopter
Highest injury
None
Fatalities
0

Probable cause

The pilot’s improper preflight of the helicopter to ensure that it was within the loading and performance limitations that resulted in settling and impact with terrain during initial climb.

NTSB narrative

The pilot of the aerial application flight stated that when the flight returned to the load truck, it still had aerial application product aboard, which he was unaware of. He requested and received an additional 60 gallons of product that was loaded onto the helicopter for the accident flight. After loading the helicopter with the additional product, it now was about 172 lbs over the helicopter’s gross weight. When the helicopter departed from the load truck on the accident flight, the helicopter experienced a decay in rotor rpm and settled into an adjacent corn field about 75 ft from the truck. The helicopter sustained substantial damage to the main and tail rotor blades and tail boom. The pilot stated that he was not properly prepared to jettison the load in the event of an emergency and his power cross checks were not adequate. The pilot stated that there was no mechanical malfunction/failure of the helicopter. An excessive load would have reduced the climb performance capability of the helicopter and resulted in settling.

NTSB coding

Evidence available

  • Photos
  • 3 docket documents
View NTSB final reportView NTSB docket

Docket documents3

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