MEMPHIS, TN, USA
N9069S
ROBINSON R-22
WHILE MANEUVERING OVER AN OPEN FIELD, THE HELICOPTER MAIN ROTOR BLADES HAD MULTIPLE CONTACTS WITH THE TAIL BOOM, RESULTING IN SEPARATION OF THE TAIL BOOM IN FLIGHT. THE COMMERCIAL PILOT WAS SEATED IN THE LEFT SEAT; THE STUDENT WAS IN THE RIGHT SEAT. FUEL QUANTITY PRIOR TO TAKEOFF WAS APPROXIMATELY 15 GALLONS. DURATION OF FLIGHT TIME PER HOBBS WAS 1.6 HOURS. THERE WAS LITTLE FUEL FOUND AT THE ACCIDENT SITE. THERE WAS NO EVIDENCE OF MECHANICAL FAILURE OR MALFUNCTION. EXAMINATION OF THE ROTOR SYSTEM REVEALED NO MECHANICAL CAUSE FOR THE MAIN ROTOR BLADE DIVERGENCE.
A LOSS OF CONTROL IN FLIGHT FOR UNDETERMINED REASONS.
Source: NTSB Aviation Accident Database
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