The documents, which are on a U.S. federal website and were viewed by Reuters, reveal the wrangling over previously proposed safety checks on CFM engines that are now the focus of investigations following a fatal engine explosion this week. The U.S. Federal Aviation Administration (FAA) said on Wednesday it would order the inspection of some CFM jet engines after investigators said a broken fan blade touched off the engine explosion on a Southwest Airlines flight, shattering a window and killing a passenger.
