Airworthiness Directive · Amendment 39-11185 · Boeing Model 767 Series Airplanes
Boeing Model 767 Series Airplanes
Model 767 series airplanes, line numbers 1 through 609 inclusive; certificated in any category; having 4330M steel fuse pins installed in the outboard support of the main landing gear (MLG) beam.
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 767 series airplanes, that requires detailed visual inspections to detect corrosion or chrome plating cracks on the fuse pins of the outboard support of the main landing gear (MLG) beam. This AD also would require either installation of the existing fuse pins and repetitive inspections; or installation of newer-type fuse pins, which constitutes terminating action for the repetitive inspections. This amendment is prompted by a report indicating that corrosion was found on a fuse pin in the outboard support of the MLG beam. The actions specified by this AD are intended to detect and correct such corrosion and cracking, which could result in the failure of a fuse pin and, consequently, lead to collapse of the MLG.
