NTSB Identification: LAX82DA138
14 CFR Part 91: General Aviation
Accident occurred Saturday, April 17, 1982 in PERRIS, CA
Probable Cause Approval Date: 04/17/1983
Aircraft: ROBINSON R-22, registration: N9043E
Injuries: 2 Uninjured.

AFTER REFUELING WITH 12.9 GALLONS OF FUEL, THE PILOT TOOK OFF WITH ONE PASSENGER ON BOARD. THE PILOT STATED THAT AFTER LIFTING OFF WITH 104% PRM, HE BEGAN A NORMAL SHALLOW TAKEOFF WITH 25 INCHES OF MANIFOLD PRESSURE. HE REPORTED REACHING ABOUT 75 FT AGL AND 50 KTS WHEN HE NOTICED THE ROTOR AND ENGINE SPEED STARTED DROPPING TO APPROXIMATELY 100 RPM. HE STATED THAT MORE POWER WAS APPLIED BUT THE RPM CONTINUED TO DECREASE. HE STOPPED CLIMBING, LOWERED THE COLLECTIVE, AND BEGAN DESCENDING. SUBSEQUENTLY, THE HELICOPTER TOUCHED DOWN WHILE STILL TRAVELING AT ABOUT 15 KTS WITH ABOUT 85% RPM. THE MAIN ROTOR SEVERED THE TAIL CONE AND THE HELICOPTER WENT OVER ON ITS NOSE AND TO THE RIGHT. THE DENSITY ALTITUDE WAS ABOUT 2800 FT. DURING THE INVESTIGATION, AN INSPECTION AND OPERATIONAL CHECK OF THE ENGINE REVEALED NO PREIMPACT FAILURES.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ROTOR RPM..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..HIGH DENSITY ALTITUDE


Contributing Factors

LACK OF TOTAL EXPERIENCE IN KIND OF AIRCRAFT..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..GROUND

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