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US, European aviation authorities order jet engine inspections



The US Federal Aviation Administration (FAA) and the European Aviation Safety Agency (EASA) each issued an emergency airworthiness directive on Friday requiring airlines to perform an ultrasound test of certain CFM56-7B engines

The affected Southwest Boeing 737 lifted from Tuesday morning from New York, direction Dallas. About 20 minutes after the flight, at about 32500 feet, a fan blade released the engine and shrapnel smashed a window.

Jennifer Riordan, 43, and a mother of two, was almost sucked out of the broken window and pulled back inside by fellow travelers. After the emergency landing of the plane in Philadelphia, she died of a blunt violent trauma.

The FAA and EASA Guidelines came on the same day that the engine manufacturer CFM International released a maintenance bulletin recommending the inspection of the CFM56-7B engine

"CFM recommends ultrasonic testing within the next 20 days for CFM56 fan blades 7B engines with more than 30,000 cycles since new, "it said. "It also recommends inspecting 20,000-rotor blades by the end of August and inspecting all other blades as they reach 20,000 cycles."

After reaching a certain age, the engines should be inspected approximately every two years, according to the manufacturer,

According to CFM International, about 680 engines will be affected by the order to inspect engines with more than 30,000 cycles over the next 20 days be. More than 1

50 of them have already been checked by the operators.

A further 2,500 engines will be impacted by the end of August recommendation to test rotor blades with 20,000 cycles, said CFM International. A jet engine cycle includes an engine start, takeoff and landing and a complete shutdown.

"The inspection performed with an ultrasound probe along the surface of the blade takes approximately four hours per engine", (19659003) US security researchers have said that the naked eye can not detect the cracks and signs of metal fatigue, who condemned the engine on Southwest Flight 1380.


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