Airworthiness Directive · Amendment 39-12375 · Boeing Model 747-400 and 767 Series Airplanes Equipped With General Electric CF6-80C2 Series Engines
Boeing Model 747-400 and 767 Series Airplanes Equipped With General Electric CF6-80C2 Series Engines
Model 747-400 and 767 series airplanes, certificated in any category, equipped with General Electric CF6- 80C2 series engines; as listed in Boeing Service Bulletin 747-71- 2285 or 767-71-0088, both dated October 8, 1998.
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747-400 and 767 series airplanes, that requires modification of the core cowl assemblies of the engines. This action is necessary to prevent failure of the core cowl latches during an engine fire, and consequent in-flight separation of an engine core cowl and its strut fire barrier from the airplane. This action is intended to address the identified unsafe condition.
