The interim order by U.S. authorities to inspect all Pratt & Whitney PW4000-112s applies to some 125 Boeing 777s. NTSB chairman Robert Sumwalt said that a fan blade from the PW4000 that failed in ...

The moves involving Pratt & Whitney PW4000 engines came after a United Airlines 777 landed safely in Denver on Saturday local time after its right engine failed. United said the next day it would ...