Airworthiness Directive · Amendment 39-10320 · Boeing Model 757 Series Airplanes
Boeing Model 757 Series Airplanes
Model 757 series airplanes, on which Boeing Alert Service Bulletin 757-24A0025, dated May 10, 1985, and/or Boeing Service Bulletin 757-24A0025, Revision 1, dated December 17, 1987, has been accomplished; excluding variable numbers NA003, NA004, NA007, NA009, NA010, NA012 through NA016 inclusive, and NA021; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 757 series airplanes, that requires one-time inspections to verify proper installation and to detect chafing and/or damage of certain rerouted wire bundles; to verify if certain protective grommets are installed properly and to detect missing grommets; and various follow-on actions. This amendment is prompted by a report of smoke and fire in the lower left-hand side of the E1-1 rack of the electrical equipment bay due to chafing of wire bundles as a result of missing protective grommets. The actions specified by this AD are intended to prevent chafing of wire bundles, which could result in smoke and fire at the E1-1 rack of the electrical equipment bay.
