Boeing Co said it recommended suspending the use of 777 jets with the same type of engine that shed debris over Denver at the weekend after U.S. regulators announced extra inspections and Japan suspended their use while considering further action.
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 voluntarily and temporarily remove its 24 active planes, hours before Boeing's announcement.
Boeing said 69 of the planes were in service and 59 were in storage, at a time when airlines have grounded planes due to a plunge in demand associated with the COVID-19 pandemic.
The manufacturer recommended airlines suspend operations until U.S. regulators identified the appropriate inspection protocol.
The 777-200s and 777-300s affected are older and less fuel efficient than newer models and most operators are phasing them out of their fleets.
Images posted by police in Broomfield, Colorado showed significant plane debris on the ground, including an engine cowling from the 26-year-old plane scattered outside a home.
