Regulation & law · 21/12/2009Updated: 10/17/2026 · 1 min read

FAA Proposes to Update Airworthiness Directive for CFM56-5B Series Turbofan Engines

The Federal Aviation Administration (FAA) is proposing to supersede an existing airworthiness directive for CFM International, S.A. CFM56-5B series turbofan engines, which requires continuous monitoring of exhaust gas temperature (EGT) margin deterioration and removal of engines that fail the inspection. The proposed update aims to improve engine reliability and prevent potential safety issues.