U.S. inspecting wire failure on Boeing 737 following Indonesian crash Robert Besser 18 May 2021, 05:08 GMT+10 Operators of 737 Classic aircraft have been ordered to check for possible wire failures, following an investigation into an Indonesia crash. The 737 Classic is an older generation of planes, averaging more than 20 years old. The FAA said the issue affected 1,041 737 Classic series airplanes worldwide. WASHINGTON D.C.: Operators of Boeing 737 Classic aircraft have been ordered to check for possible wire failures, following an investigation into an Indonesia crash in January. The order was issued by the Federal Aviation Administration (FAA) on May 14. The 737 Classic is an older generation of planes, averaging more than 20 years old. The FAA said the issue affected 1,041 737-300, -400 and -500 Classic series airplanes worldwide. However, many of these planes are no longer flying.