Airworthiness Directives; Bell Helicopter Textron, Inc. Model 206A, 206B, 206L, 206L-1, and 206L-3 Helicopters

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This amendment adopts a new airworthiness directive (AD), applicable to Bell Helicopter Textron, Inc. (BHTI) Model 206A, 206B, 206L, 206L-1, and 206L-3 helicopters, that requires installing a protective mechanical fuel valve switch guard on the fuel valve switch. This amendment is prompted by reports of airmen inadvertently placing the fuel valve switch to the ``OFF'' position. The actions specified by this AD are intended to prevent the fuel valve switch from being inadvertently placed in the ``OFF'' position, which could result in an engine failure and a subsequent power-off landing.