On May 7, 1988, a Bell 47G-3B1 (registration N8455E) was involved in an aviation accident near Cortez, CO. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A helicopter crashed shortly after takeoff when the collective control became unresponsive at about 300 feet, leading to a descent and impact with soft mud. The main rotor blades severed the tail boom during subsequent rocking, and a fire destroyed the aircraft.
Accident Summary
The pilot reported that immediately after takeoff, while reaching an altitude of approximately 300 feet, the helicopter's collective control became 'limp' and unresponsive. As a result, the helicopter entered an uncontrolled descent. The pilot attempted to maintain partial control using the throttle and cyclic control inputs. The helicopter subsequently touched down in soft mud. Upon touchdown, the helicopter rocked forward and then aft. This motion caused the main rotor blades to make contact with the tail boom, severing it, and also to strike the ground. A post-accident fire erupted, completely destroying the helicopter.
Examination of Components
Several broken parts from the helicopter were examined at a laboratory. The examination found no evidence of fatigue or corrosion on the fractured surfaces of the components examined.
Frequently asked questions
What happened in the 7 May 1988 Bell 47G-3B1 accident near Cortez, CO?
A helicopter crashed shortly after takeoff when the collective control became unresponsive at about 300 feet, leading to a descent and impact with soft mud. The main rotor blades severed the tail boom during subsequent rocking, and a fire destroyed the aircraft.
What aircraft was involved and where did it happen?
The accident on 7 May 1988 involved a Bell 47G-3B1, registration N8455E, at Cortez, CO.
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