RONKONKOMA, NY, USA
N9021M
ROBINSON R-22HP
THE ROBINSON R-22HP TOOK OFF AND CRASHED ON THE AIRPORT IMMEDIATELY AFTER GETTING AIRBORNE. THERE WERE NO WITNESSES AND THE PILOT SAID HE DID NOT REMEMBER WHAT HAPPENED. THE MAIN ROTOR EXHIBITED SIGNS OF LOW ROTOR RPM AND THE FUSELAGE SHOWED SIGNS OF HIGH VERTICAL IMPACT FORCES. THE MAIN ROTOR HEAD AND THE FREEWHEELING CLUTCH WERE BOTH FREE TO ROTATE. NO EVIDENCE OF CONTROL MALFUNCTION WAS FOUND.
THE PILOT'S IMPROPER OPERATION OF THE ROTORCRAFT FLIGHT CONTROLS AND A RESULTING LOW ROTOR RPM CONDITION.
Source: NTSB Aviation Accident Database
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