NTSB Identification: LAX92LA087.
The docket is stored on NTSB microfiche number 46076.
Accident occurred Saturday, January 11, 1992 in LAKE HUGHES, CA
Probable Cause Approval Date: 06/11/1993
Aircraft: ROBINSON R22B, registration: N2634N
Injuries: 2 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
THE 77 HOUR NEWLY CERTIFICATED PRIVATE PILOT SAID HE PERFORMED A RIGHT 180 DEGREE TURN AT ABOUT 500 FEET AGL. DURING THE TURN THE LOW ROTOR RPM WARNING HORN AND LIGHT CAME ON. THE PILOT ATTEMPTED TO REGAIN ROTOR RPM BY MANIPULATING THE THROTTLE AND COLLECTIVE CONTROLS, BUT WAS UNSUCCESSFUL. THE PILOT ENTERED AN AUTOROTATION, LANDED HARD AND THE MAIN ROTOR SEVERED THE TAIL BOOM. THE PILOT REPORTED THAT THERE WAS NO MECHANICAL MALFUNCTION OR FAILURE OF THE HELICOPTER.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: THE FAILURE OF THE PILOT TO MAINTAIN ROTOR RPM WHILE MANEUVERING AND HIS MISJUDGEMENT OF THE LANDING FLARE. A FACTOR IN THE ACCIDENT WAS THE PILOT'S LACK OF TOTAL EXPERIENCE.
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