On July 15, 2001, a Schweizer 269C (registration N61434) operated by Northern Flights Helicopter Service, Inc. was involved in an aviation accident near Walker, MN. Investigators recorded the probable cause as: the loss of engine power for undetermined reasons during takeoff. Factors were the vehicles, the unsuitable terrain the pilot encountered, and the low altitude of the helicopter at the time of the loss of engine power. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A helicopter received substantial damage after a reported engine power loss during takeoff led to impact with vehicles and terrain. The pilot and two passengers incurred minor injuries. Subsequent engine testing revealed full rated power output.
Incident Summary
A helicopter sustained substantial damage when it impacted vehicles and terrain during takeoff following a reported loss of engine power while in flight. The pilot and two passengers suffered minor injuries in the occurrence.
Pilot's Account
The pilot reported that all instrument indications were normal before departure. After a normal rate-of-climb takeoff, the aircraft experienced a momentary partial power loss. The pilot noted that altitude was insufficient to reduce collective to minimize power applications, and the helicopter began descending rapidly toward a parking lot filled with vehicles below. The pilot stated there was no other suitable terrain available for landing.
Witness Statement
A witness observed the helicopter nose over and move forward while gaining altitude. The witness then turned to speak with someone nearby but was drawn back by a change in the sound emanating from the helicopter.
Engine Examination
Following the accident, the engine was subjected to a test run. The test produced full rated power, indicating the engine was capable of normal operation after the event.