Transport i infrastruktura · 14/01/2010
FAA Adopts New Airworthiness Directive for CFM56-7B Turbofan Engines
The Federal Aviation Administration (FAA) has issued a new airworthiness directive requiring initial and repetitive eddy current inspections of certain CFM56-7B series turbofan engines to prevent failure of the low-pressure turbine rear frame due to low-cycle-fatigue cracks.