Regulation & law · 29/09/1999

AlliedSignal Inc. Issues Revised Airworthiness Directive for TFE731 Series Turbofan Engines

The Federal Aviation Administration (FAA) has issued a revised airworthiness directive (AD) for AlliedSignal Inc.'s TFE731 series turbofan engines, clarifying the installation requirements for Learjet 35, 36, and 55 series airplanes, in response to operator confusion regarding the applicability of these engine installations, with the goal of preventing fuel tube cracking and subsequent engine fires.