US plane manufacturer Boeing has recommended grounding all of the 777-model aircraft which have the same type of engine that suffered failure and shed debris over Denver on Saturday.
It said 128 jets should be suspended until inspections are carried out.
United Airlines and Japan’s two main operators have already stopped using 56 planes with the same engine.
Flight 328, carrying 231 passengers, was forced to make an emergency landing at Denver airport. No-one was injured.
