Airworthiness Directive · Amendment 39-9230 · Boeing Model 757 Series Airplanes Equipped With Rolls Royce Engines
Boeing Model 757 Series Airplanes Equipped With Rolls Royce Engines
Model 757 series airplanes equipped with Rolls Royce engines; as listed in Boeing Alert Service Bulletin 757- 54A0030, Revision 1, dated December 20, 1993; certificated in any category.
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 757 series airplanes, that currently requires inspections to detect fatigue-related cracking or breakage of the hydraulic tubing support brackets located on the upper spar web in the engine struts; further inspection to detect related damage of the upper spar web, the fuel lines, and the hydraulic lines, as necessary; and repair or replacement of cracked or damaged parts. That AD was prompted by reports of fatigue-related cracks in the hydraulic tubing support brackets located on the upper spar web in the engine struts. The actions specified by that AD are intended to prevent such fatigue-related cracking, which could result in fuel or hydraulic fluid leakage into the interior of the engine strut and cause a fire. This amendment requires installation of a previously optional terminating action.
