On February 28, 1993, a Huddleston-bell 47G2 (registration N37870) operated by Perez, Santiago T. was involved in an aviation accident near Rio Grande, PR. Investigators recorded the probable cause as: POOR IN-FLIGHT PLANNING BY THE PILOT-IN-COMMAND. CONTRIBUTING TO THE ACCIDENT WAS THE FLIGHT'S LACK OF TOTAL EXPERIENCE. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A student pilot reported strong vibration and a right-turning tendency during cruise. While descending for a precautionary landing, the main rotor blades hit a tree, and the helicopter subsequently struck the ground and rolled onto its right side.
Incident Overview
A student pilot experienced a strong vibration and a tendency for the helicopter to yaw to the right during cruise flight. The pilot executed a 180-degree turn and began descending for a precautionary landing to a concrete pad. During the descent, the main rotor blades collided with a tree. The helicopter then descended further, collided with the ground, and rolled onto its right side.
Examination Findings
An FAA inspector examined the helicopter at the accident site. The inspector noted that an open field was adjacent to the concrete pad. Additionally, a passenger was on board the helicopter at the time of the crash.
Cause Determination
No determination could be made regarding the reason for the reported vibration or the yawing tendency.
Frequently asked questions
What happened in the 28 Feb 1993 Huddleston-bell 47G2 accident near Rio Grande, PR?
A student pilot reported strong vibration and a right-turning tendency during cruise. While descending for a precautionary landing, the main rotor blades hit a tree, and the helicopter subsequently struck the ground and rolled onto its right side.
What aircraft was involved and where did it happen?
The accident on 28 Feb 1993 involved a Huddleston-bell 47G2, registration N37870, operated by Perez, Santiago T., at Rio Grande, PR.
What was the probable cause of the accident?
POOR IN-FLIGHT PLANNING BY THE PILOT-IN-COMMAND. CONTRIBUTING TO THE ACCIDENT WAS THE FLIGHT'S LACK OF TOTAL EXPERIENCE.
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