Airworthiness Directive · Amendment 39-9879 · Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 Series Airplanes
Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes, serial numbers 10653 through 10692 inclusive; on which Part 1 of the Accomplishment Instructions of Fokker Service Bulletins F27/57-68 and F27/57-70 has not been accomplished; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain Fokker Model F27 Mark 100, 200, 300, 400, 500, 600, and 700 series airplanes, that requires a one-time visual inspection to detect missing rivet heads or loose rivets of the applicable stringer-to-rib connections in the upper and lower wing skin, and repair, if necessary. In lieu of the one-time visual inspection or in addition to that inspection, the AD also requires replacement of certain rivets with certain new rivets in all applicable rib-to-stringer connections of the upper and lower wings. This amendment is prompted by reports of missing rivet heads at the rib-to- stringer connections of the upper and lower wing skin at stringers 5 and 6. The actions specified by this AD are intended to prevent reduced structural integrity of the wings that is caused by problems associated with missing and/or loose rivets.
