On August 29, 1984, a Bell 47G-2 (registration N18807) operated by Aircraft & Helicopter Serv Inc was involved in an aviation accident near EL Cajon, CA. Investigators recorded the probable cause as: The pilot's inability to stop the descent during landing due to a stiff collective control. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A helicopter sustained damage during a hard landing while conducting a test flight. The pilot reported excessive stiffness in the collective control, preventing him from arresting the descent rate effectively before impact.
What happened
The helicopter experienced a hard landing while conducting a test flight. During the approach and landing phase, the pilot reported that the collective control was extremely stiff. This resistance prevented him from stopping the descent effectively during the final moments of the landing maneuver.
The investigation
Following the accident, an inspector from the Federal Aviation Administration examined the helicopter to determine the mechanical condition of the aircraft. The inspection revealed no discrepancies within the control system. Furthermore, the movement of the controls was found to be smooth and free of any binding issues.
Probable cause
The pilot's inability to stop the descent during landing due to a stiff collective control.
Frequently asked questions
What happened in the 29 Aug 1984 Bell 47G-2 accident near EL Cajon, CA?
A helicopter sustained damage during a hard landing while conducting a test flight. The pilot reported excessive stiffness in the collective control, preventing him from arresting the descent rate effectively before impact.
What aircraft was involved and where did it happen?
The accident on 29 Aug 1984 involved a Bell 47G-2, registration N18807, operated by Aircraft & Helicopter Serv Inc, at EL Cajon, CA.
What was the probable cause of the accident?
The pilot's inability to stop the descent during landing due to a stiff collective control.
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