Aviation Accident Summary MIA89LA255

LEXINGTON, MS, USA

Aircraft #1

N9318F

HUGHES 269B

Analysis

DURING FLT, THE HELICOPTER PLT NOTED THAT THE MAIN ROTOR RPM BEGAN DECREASING & THE ENG RPM BEGAN INCREASING. HE INITIATED AN AUTOROTATION, BUT THE HELICOPTER LANDED IN TREES & WAS DAMAGED. AN EXAM REVEALED A BOLT LUG ON THE END OF THE LINEAR ACTUATOR (THAT ENGAGED THE BELT DRIVE) HAD FAILED FROM FATIGUE.

Probable Cause and Findings

FATIGUE FAILURE OF THE LINEAR ACTUATOR LUG. A RELATED FACTOR WAS: TREES IN THE EMERGENCY LANDING AREA.

 

Source: NTSB Aviation Accident Database

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