2023-12-16 08:00:00
La Federal Aviation Administration (FAA) of the United States has issued an Airworthiness Directive (AD) which should result in 1 900 Boeing 737-600/700/800/900NG flying in America are equipped with redesigned and more robust engine nacelles.
The reason for this measure was two incidents with defective fan blades on 737-700NGs from Southwest Airlines, during which pieces of the engine nacelle pierced the aircraft fuselage. In a 2018 accident, a woman was killed during an explosive decompression.
The required changes vary by aircraft type, but include new, stronger intake struts, a fan cowl support bar and a redesigned, stiffer exhaust nozzle, according to Boeing. The renovations are expected to cost 7 650 dollars per engine and the work will require approximately 90 hours by engine.
In the United States, the comment period on the AD ends on January 26, 2024, following which all aircraft must comply with the new regulations by July 31, 2028. Aviation authorities are expected to further countries also make these adjustments mandatory. There is more of 6 500 737NGs flying around the world.
©NTSB
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