Airworthiness Directives; Fokker Model F28 Mark 0070 and 0100 Series Airplanes

Resumo

This document publishes in the Federal Register an amendment adopting airworthiness directive (AD) 96-23-16 that was sent previously to all known U.S. owners and operators of Fokker Model F28 Mark 0070 and 0100 series airplanes by individual notices. This AD requires a revision to the Airplane Flight Manual that will enable the flightcrew to determine if the thrust reversers are properly locked prior to take- off. This AD also prohibits dispatch of the airplane, under certain conditions, with both autothrottle channels inoperative. In addition, this AD requires revising the maintenance program to provide instructions to correct thrust reverser malfunctions. This amendment is prompted by preliminary results of an investigation of an accident in which a thrust reverser may have deployed inadvertently during flight. The actions specified by this AD are intended to prevent an unannunciated failure of the secondary lock of the thrust reversers, which could result in reduced protection against inadvertent deployment of the thrust reversers during flight.