Summary
The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 767-200, -300, and -300F series airplanes. This proposed AD was prompted by a report of a main landing gear (MLG) collapse event following maintenance where a grinder was operating outside of its input parameters, resulting in possible heat damage to the outer cylinder of the MLG. This proposed AD would require replacing any affected outer cylinders. The FAA is proposing this AD to address the unsafe condition on these products.