South Korea's two biggest carriers -- Korean Air Lines Co. and Asiana Airlines Inc. -- said Monday they will ground all Boeing 777 passenger jets following a recent engine failure incident in the United States.

A B777-200 plane suffered an engine failure after taking off for Honolulu on Saturday (local time), with an engine cowling and other parts from the plane found to be scattered on the ground in Denver, according to foreign media reports.

The United Airlines, Inc. flight reportedly landed safely without any injuries on the plane or the ground.

Boeing Co. recommended its clients ground 777 jets mated with the Pratt & Whitney PW4000 engine.

Korean Air currently operates six out of 16 B777 jets with the same type of engine on routes to Japan and Southeast Asia, and Asiana runs seven out of nine B777s on short and mid-haul routes to meet business travel demand.

"We are in consultations with Boeing and the transport ministry on the suspension of the planes. There is no recommendation from the authorities to halt the planes' operation," a Korean Air spokeswoman said.

Jin Air Co., the budget carrier unit of Korean Air, operates four B777 planes on domestic routes. The carrier said it awaits a recommendation from the ministry.

Local airlines have suspended most of their flights on international routes since early last year as countries strengthen entry restrictions to stem the spread of COVID-19 pandemic.

The US National Transportation Safety Board (NTSB) began an investigation into the accident. The NTSB will focus on what caused the engine failure, the reports said. (Yonhap)