U.S. aviation watchdog vows to overhaul air safety oversight after two Boeing crashes

Daniel Elwell, acting administrator of the U.S. Federal Aviation Administration (FAA), attends a Senate Commerce Committee hearing on airline safety in Washington D.C., the United States, on March 27, 2019. The U.S. Federal Aviation Administration (FAA) on Wednesday vowed to revamp its air safety oversight after two deadly crashes involving Boeing 737 Max jets in less than five months pointed to possible lapses in the aircraft approval process. (Xinhua/Liu Jie)