Lanesboro, IA, USA
N51767
ENSTROM F-28C
The pilot reported that his door opened during the low-altitude aerial observation flight. The pilot stated that he was unable to close the door in flight due to the wind, so he decided to make an off-airport landing to close and latch the door. He stated that when he initiated a turn, the door opened, so he continued the flight in a direction such that the wind kept the door closed; he believed this direction would result in a headwind. The pilot stated that during the landing, the helicopter lost lift at an altitude of 5 to 10 feet above the ground. The helicopter impacted the ground, which resulted in the main rotor blade severing the tail boom. Ground scars and recorded wind information indicated that the landing was performed with a gusty tailwind.
The purpose of the flight was to count geese as part of the Iowa Department of Natural resources water fowl program. The pilot reported that during the flight the pilot’s side door opened. The pilot stated he was unable to close the door due to the wind, so he decided to make an off airport landing to close and latch the door. He stated that when he initiated a turn the door opened due to the wind, so he continued the flight in a direction that the wind kept the door closed, believing this direction would result in a headwind. The landing sequence was “normal” with some turbulence and windy conditions. The pilot reported the helicopter lost all lift at an altitude of five to ten feet above the ground. The helicopter experienced a hard impact with the ground which resulted in a main rotor blade severing the tail boom. Ground scars indicated the helicopter was on a heading of 165 degrees when it impacted the terrain. The closest weather reporting station, 11 miles away, recorded wind from 20 degrees at 13 knots gusting to 19 knots. The pilot reported there were no mechanical failures/malfunctions of the helicopter.
The pilot’s failure to maintain control of the helicopter while making an off-airport landing with a gusty tailwind.
Source: NTSB Aviation Accident Database
Aviation Accidents App
In-Depth Access to Aviation Accident Reports
