Airworthiness Directives; Fokker Model F28 Mark 1000, 2000, 3000, and 4000 Series Airplanes

Résumé

This amendment adopts a new airworthiness directive (AD), applicable to all Fokker Model F28 Mark 1000, 2000, 3000, and 4000 series airplanes, that requires modification of the passenger door lock warning system. This amendment is prompted by reports that the passenger door opened during flight due to an improperly locked door; additionally, the door warning signal was not sufficiently visible to alert the flight crew of this condition. The actions specified by this AD are intended to ensure that the flight crew is aware of an unlocked passenger door prior to takeoff of the airplane. This condition, if not corrected, could result in inadvertent opening of the passenger door while the airplane is in flight.