On August 13, 1991, a Robinson R22B (registration N4037A) operated by Arizona Wing & Rotor, Inc. was involved in an aviation accident near Chandler, AZ. Investigators recorded the probable cause as: The student pilot's loss of orientation during turns, which resulted in a hard impact with the ground and rollover. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 2 related events involving the same aircraft type or operator are linked below.
A student pilot practicing local maneuvers lost his orientation and became dizzy, resulting in a hard impact with the ground and a rollover of the helicopter.
What happened
The incident occurred while a student pilot was conducting local practice maneuvers in a designated practice area. During the execution of turns, the pilot reported losing his spatial orientation and experiencing dizziness. The helicopter subsequently impacted the ground with significant force and rolled over.
The investigation
A thorough examination of the helicopter was conducted following the accident. Investigators found no evidence of pre-impact mechanical malfunction or failure that would have contributed to the event.
Probable cause
The student pilot's loss of orientation during turns, which resulted in a hard impact with the ground and rollover.
What happened in the 13 Aug 1991 Robinson R22B accident near Chandler, AZ?
A student pilot practicing local maneuvers lost his orientation and became dizzy, resulting in a hard impact with the ground and a rollover of the helicopter.
What aircraft was involved and where did it happen?
The accident on 13 Aug 1991 involved a Robinson R22B, registration N4037A, operated by Arizona Wing & Rotor, Inc., at Chandler, AZ.
What was the probable cause of the accident?
The student pilot's loss of orientation during turns, which resulted in a hard impact with the ground and rollover.
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