On March 28, 1992, a Robinson R-22B (registration N133MB) operated by M.g. Helicopters, Inc was involved in an aviation accident near Phillipsburg, OH. Investigators recorded the probable cause as: THE LOSS OF CONTROL DUE TO INADEQUATE ROTOR RPM. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During a demonstration flight, the pilot performed a quick stop and 180-degree hover turn, then noticed low main rotor RPM. Unable to increase RPM, the helicopter descended and impacted the ground, coming to rest on its right side.
Flight Sequence
The pilot was conducting a demonstration flight with a passenger. The approach was made to an open field adjacent to runway 3. The pilot concluded the approach with a quick stop maneuver. Following the stop, the pilot hovered the helicopter and executed a 180-degree turn.
Incident
Shortly after completing the turn, the pilot observed that the main rotor RPM had dropped to an excessively low level. Despite efforts, the pilot was unable to increase the rotor RPM. The helicopter subsequently began to descend.
Outcome
The helicopter descended and impacted the ground. After impact, the helicopter came to rest on its right side. The pilot reported that there was no mechanical malfunction with the helicopter.
What happened in the 28 Mar 1992 Robinson R-22B accident near Phillipsburg, OH?
During a demonstration flight, the pilot performed a quick stop and 180-degree hover turn, then noticed low main rotor RPM. Unable to increase RPM, the helicopter descended and impacted the ground, coming to rest on its right side.
What aircraft was involved and where did it happen?
The accident on 28 Mar 1992 involved a Robinson R-22B, registration N133MB, operated by M.g. Helicopters, Inc, at Phillipsburg, OH.
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