Airworthiness Directive · Amendment 39-10278 · Fokker Model F27 Mark 050 Series Airplanes
Fokker Model F27 Mark 050 Series Airplanes
Model F27 Mark 050 airplanes; serial numbers 20103 through 20266 inclusive, 20270 through 20292 inclusive, and 20294 through 20304 inclusive; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain Fokker Model F27 Mark 050 series airplanes. This action requires replacement of the spring tab balance units in the ailerons and the inboard aileron hinge bolts and bearings with improved parts. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to prevent failure of the aileron gustlock mechanism and the inboard aileron hinge bolt, which could result in inability to operate the ailerons, and consequent reduced controllability of the airplane.
