The Brief

HUNTINGTON BEACH, Calif. - A recent investigation has revealed that a loose small part in the tail was the mechanical failure that caused a helicopter crash last month in Huntington Beach , rendering the aircraft uncontrollable.

What we know:

Federal investigators determined that a crucial small part connecting the controls to the tail rotor blades came loose, making it impossible for the pilot to maintain control of the helicopter.

Multiple videos posted online showed the aircraft twirling clockwise before it plunged toward the edge of the beach, becoming wedged between palm trees and a staircase near Pacific Coast Highway.

PREVIOUS COVERAGE: Helicopter crashes in Huntington Beach; 5 hurt, including child

The Huntington Beach fire department confirmed the accident r

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