Aviation Transport World NewsU.S. aviation regulator pledges rigorous certification for Boeing 777XAliyu DANLADINovember 21, 2019November 21, 2019 by Aliyu DANLADINovember 21, 2019November 21, 20190575 The U.S. aviation regulator says it will ensure certification of Boeing’s 777X wide-body jet is conducted rigorously, the agency’s head said on Wednesday while reaffirming
