Summary
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Boeing Model 767 series airplanes. This proposal would require detailed visual inspections to detect corrosion or chrome plating cracks on the fuse pins, load distribution plates, and bushings of the outboard support of the main landing gear (MLG) beam. This proposal also would require either installation of the existing fuse pins and repetitive inspections; or installation of newer-type fuse pins, which would constitute terminating action for the repetitive inspections. This proposal 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 the proposed 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.