On September 30, 1992, a Robinson R22-B (registration N8069X) operated by Helicopter Adventures Inc. was involved in an aviation accident near Martinez, CA. Investigators recorded the probable cause as: AN UNDETERMINED DIVERGENCE OF THE MAIN ROTOR FROM ITS NORMAL PLANE OF ROTATION WHICH RESULTED IN ROTOR CONTACT TO THE FUSELAGE AND PASSENGER. 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 helicopter carrying a certified flight instructor and a prospective student crashed three minutes after takeoff. Witnesses reported noises before the engine stopped and the main rotor struck the cockpit.
Incident Overview and Initial Flight Details A certified flight instructor and a prospective student departed for a short helicopter demonstration flight under clear visual flight rules (VFR) conditions. The aircraft was operating in an urban environment when the incident occurred. Three minutes after departure, the helicopter was overflying an urban park area located approximately 1.5 miles west of the departure airport. At this point, the flight transitioned from a normal demonstration profile to an emergency situation, though the specific aircraft type, registration, operator, and exact date were not provided in the source material. The flight was intended to be brief, and the crew was in a populated area, which increased the potential for ground casualties, though the source does not specify any injuries or fatalities beyond the rotor striking the right seat passenger.
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