U.S. FAA to require strengthening key part on Boeing 777 engine By David Shepardson Reuters WASHINGTON (Reuters) - The head of the Federal Aviation Administration said on Wednesday the agency is going to mandate strengthening a key engine part on Boeing 777 planes with Pratt & Whitney (PW) engines like the one involved in an emergency landing in February. FAA Administrator Steve Dickson told a U.S. House committee that the agency is "requiring the manufacturers to address strengthen(ing) the cowling." He also said the agency was working with Boeing and PW to ensure "the structure around the engine, the cowling and the inlet area, does not damage the aircraft structure."