Regulation & law · 21/11/2007

FAA Issues Airworthiness Directive for CFM56-5C4/1 Engines

The Federal Aviation Administration (FAA) has issued an airworthiness directive (AD) requiring the removal of a specific low-pressure turbine (LPT) conical support from CFM International, S.A. CFM56-5C4/1 series turbofan engines before reaching a new cyclic life limit of 20,000 cycles-since-new (CSN), in order to prevent potential engine failure and damage to the airplane.