Airworthiness Directive · Amendment 39-9758 · Various Airplanes
Various Airplanes
This AD applies to Various F.28 Mark 0100.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to certain Fokker Model F28 Mark 0100 series airplanes, that requires inspection and adjustment of the torque value of the attaching parts of the interlock mechanism of the large cargo doors, removal of a spring from that mechanism, and installation of a new microswitch bracket. This amendment is prompted by a report indicating that a spring on the interlock lever of the large cargo doors may become disconnected or the lever may become jammed in the "activated" state. The actions specified by this AD are intended to prevent the spring from becoming disconnected or the lever from jamming. If other failures occur, the flightcrew could dispatch the airplane with improperly locked cargo doors; this condition could result in the opening and/or separation of the cargo doors while the airplane is in flight and subsequent rapid decompression and/or structural damage to the airplane.
