By Mugo Odigwe

CHICAGO (CBS)– Chicago-based Boeing is grounding all of its 777 airplanes equipped with the type of engine that suffered a catastrophic failure over Denver on Saturday.

Only minutes into flight 328 from Denver to Honolulu, two of the engine’s fan blades were fractured and the front had come off.

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On Sunday, United Airlines immediately removed 24 of its Boeing 777 airplanes from service out of an abundance of caution.

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Then Boeing itself said it is suspending operations of the 69 in-service and 59 in-storage planes.

This as the NTSB investigates the cause of the right engine fire.

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United is the only U.S. airline with this type of engine. Japan has also suspended them until an investigation is complete.