NTSB Identification: LAX83LA311.
The docket is stored on NTSB microfiche number 22997.
Accident occurred Monday, June 27, 1983 in BUCKMAN SPRINGS, CA
Aircraft: ROBINSON R22, registration: N9065L
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 HELICOPTER EXPERIENCED A LOSS OF LIFT AND DESCENDED INTO A LAKE AFTER TAKEOFF. THE ACFT WAS ABOUT 29 LBS BELOW MAX GROSS WEIGHT AND THE FIELD ELEVATION FOR TAKEOFF WAS 4200 FT; ALSO THE CALCULATED HOVER CEILING OUT OF GROUND EFFECT. THE PLT HAD CLIMBED TO 4300 FT AND TURNED DOWNWIND IN A 10-15 KT WIND AND THE PLT THINKS HE 'MAY HAVE LOST TRANSITIONAL LIFT.' INVESTIGATION FAILED TO REVEAL ANY PRE-IMPACT FAILURE OF THE ACFT OR ENG THAT COULD HAVE CONTRIBUTEDTO THIS ACCIDENT.

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

ROTORCRAFT FLIGHT CONTROLS..IMPROPER USE OF..PILOT IN COMMAND

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

AIRCRAFT PERFORMANCE..EXCEEDED

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

PERFORMANCE DATA..DISREGARDED..PILOT IN COMMAND

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

PREFLIGHT PLANNING/PREPARATION..INADEQUATE..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..HIGH DENSITY ALTITUDE

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