On June 9, 1985, an Enstrom 280C (registration N5694Y) was involved in an aviation accident near S.woodstock, VT. Investigators recorded the probable cause as: A loss of rotor RPM during liftoff which led to a loss of climb performance and subsequent collision with terrain/obstacles. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A helicopter suffered a significant drop in rotor revolutions per minute immediately upon liftoff, leading to an inability to climb and a subsequent collision with a nearby chain link fence.
What happened
The aircraft experienced a critical mechanical failure shortly after initiating its departure sequence. As the pilot attempted to lift off to approximately 50 feet above ground level, the rotor revolutions per minute (RPM) dropped significantly to 2800. This sudden loss of rotational speed resulted in an immediate inability to maintain altitude or continue climbing.
In an effort to recover control and increase the rotor RPM, the pilot attempted to descend. However, the situation progressed too rapidly for any corrective action to be effective. The aircraft continued its descent and collided with a chain link fence located near the takeoff area. The impact resulted in substantial damage to the helicopter.
Probable cause
A loss of rotor RPM during liftoff which led to a loss of climb performance and subsequent collision with terrain/obstacles.
Frequently asked questions
What happened in the 9 Jun 1985 Enstrom 280C accident near S.woodstock, VT?
A helicopter suffered a significant drop in rotor revolutions per minute immediately upon liftoff, leading to an inability to climb and a subsequent collision with a nearby chain link fence.
What aircraft was involved and where did it happen?
The accident on 9 Jun 1985 involved an Enstrom 280C, registration N5694Y, at S.woodstock, VT.
What was the probable cause of the accident?
A loss of rotor RPM during liftoff which led to a loss of climb performance and subsequent collision with terrain/obstacles.
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