Here it United Airlines Flight 3 to 8 had to make an emergency landing in Denver after its right engine blew apart just after takeoff.

Saturday's incident prompted the grounding of dozens of Boeing 777 planes, which are fitted with the Pratt and Whitney PW 4000 engine.

The U S Federal Aviation Administration wants operators to inspect the large titanium fan blades on the front of each engine before any further flights Boeing said it supported the FAA is guidance on will work through the process with its customers.

United Airlines Egypt air operators in Japan and South Korea have all said they will not be flying there.

Boeing 77 Sevens United has warned or possible disruptions to its cargo flight schedule in March as it juggles the rest of its fleet.

Saturday's engine failure is a fresh blow for Boeing.

The world's largest aerospace company is already trying to repair its image following the grounding off its flagship 737 max.