NTSB Identification: LAX87LA012.
The docket is stored on NTSB microfiche number 33047.
Accident occurred Tuesday, October 07, 1986 in DOLAN SPRINGS, AZ
Aircraft: ROBINSON R-22, registration: N2270C
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 PILOT STATED THAT HE WAS CLIMBING THE HELICOPTER UP A DRY WASH AND PLANNED TO CROSS A 3000 FOOT HIGH RIDGE AT ABOUT 10 FEET ABOVE THE TERRAIN. AS HE APPROACHED THE RIDGE THE HELICOPTER YAWED TO THE RIGHT ABOUT 70 DEGREES AND THE ACFT MAIN ROTOR LOST RPM. THE PASSENGER STATED THAT THE ACFT IMPACTED THE GROUND AND NOSED OVER LANDING IN AN UPRIGHT ATTITUDE.

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

IN-FLIGHT PLANNING/DECISION..INADEQUATE..PILOT IN COMMAND

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

LOW PASS..PERFORMED..PILOT IN COMMAND

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

CLEARANCE..MISJUDGED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..HIGH TERRAIN


Contributing Factors

WEATHER CONDITION..HIGH DENSITY ALTITUDE

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