Airworthiness Directive · Amendment 39-12311 · Boeing Model 757-200 Series Airplanes Modified by Supplemental Type Certificate SA1727GL
Boeing Model 757-200 Series Airplanes Modified by Supplemental Type Certificate SA1727GL
Model 757-200 series airplanes modified by Supplemental Type Certificate (STC) SA1727GL, certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to all Boeing Model 757-200 series airplanes modified by Supplemental Type Certificate (STC) SA1727GL, that requires deactivation of the air-to-ground telephone system approved by that STC. This action is necessary to prevent the inability of the flight crew to remove power from the telephone system when necessary. Inability to remove power from the telephone system during a non-normal or emergency situation could result in inability to control smoke or fumes in the airplane flight deck or cabin. This action is intended to address the identified unsafe condition.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
