Airworthiness Directive · Amendment 39-12632 · Boeing Model 757 Series Airplanes
Boeing Model 757 Series Airplanes
Model 757 series airplanes, certificated in any category, as listed in Boeing Service Bulletins 757-29-0058 and 757- 29-0059, both dated November 9, 2000.
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 757 series airplanes, that requires a one-time inspection of a wire bundle in the left wing front spar for chafing and for proper installation of a Teflon sleeve; corrective action, if necessary; and installation of extra protection against chafing. This action is necessary to prevent chafing between the wire bundle and the left wing front spar, which could result in electrical arcing and subsequent ignition of flammable vapors and possible uncontrollable fire. This action is intended to address the identified unsafe condition.
