South Korea's two biggest carriers said they will ground their Boeing 777 passenger jets following a recent engine failure incident in the U.S. 

According to industry sources on Monday, Asiana Airlines grounded nine 777 jets equipped with the Pratt and Whitney PW4000 engine. 

In addition, Korean Air Lines said it has grounded all of its aircraft with the engine. The country's largest carrier reportedly has 54 Boeing 777 jets, including 16 equipped with the PW4000 engine.  

Boeing reportedly has recommended grounding all 777 model aircraft with the same type of engine. On Saturday, United Flight 328, bound for Honolulu, suffered engine failure, sending debris crashing down over Denver, Colorado.