NTSB Identification: LAX90LA210.
The docket is stored on NTSB microfiche number 43475.
Accident occurred Wednesday, June 06, 1990 in PASO ROBLES, CA
Probable Cause Approval Date: 11/23/1992
Aircraft: HUGHES 269B, registration: N691RR
Injuries: 3 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 SAID HE WAS FLYING UP A VALLEY IN ROLLING HILL CONTRY AND ENCOUNTERED A SEVERE AND SUDDEN GUST OF WIND AS THE HELICOPTER FLEW OVER A RIDGE LINE AT A VERY LOW ALTITUDE. THE PILOT SAID THE WIND GUST WAS ACCCOMPANIED BY STRONG TURBULENCE AND A SEVERE DOWN DRAFT. THE PILOT SAID THE HELICOPTER WAS FORCED DOWNWARD INTO THE GROUND AND HE WAS ABLE TO ARREST THE DESCENT AND MAKE A NORMAL SOFT TOUCH DOWN ON THE CREST OF THE RIDGE. THE PILOT SAID THE HELICOPTER ROLLED OVER ON ITS SIDE JUST AFTER TOUCH DOWN.

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

THIS ACCIDENT WAS DYNAMIC ROLLOVER DUE TO THE TERRAIN SLOPE EXCEEDING THE CAPABILITY OF THE HELICOPTER.

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