Boeing: 777s with engine that blew apart should be grounded
This Saturday, Feb. 20, 2021 photo provided by Hayden Smith shows United Airlines Flight 328 approaching Denver International Airport, after experiencing "a right-engine failure" shortly after takeoff from Denver. Federal regulators are investigating what caused a catastrophic engine failure on the plane that rained debris on Denver suburbs as the aircraft made an emergency landing. Authorities said nobody aboard or on the ground was hurt despite large pieces of the engine casing that narrowly missed homes below. (Hayden Smith via AP)

This Saturday, Feb. 20, 2021 photo provided by Hayden Smith shows United Airlines Flight 328 approaching Denver International Airport, after experiencing "a right-engine failure" shortly after takeoff from Denver. Federal regulators are investigating what caused a catastrophic engine failure on the plane that rained debris on Denver suburbs as the aircraft made an emergency landing. Authorities said nobody aboard or on the ground was hurt despite large pieces of the engine casing that narrowly missed homes below. (Hayden Smith via AP)

Feb. 21, 2021 05:56 PM EST
In this image taken from video, the engine of United Airlines Flight 328 is on fire after after experiencing "a right-engine failure" shortly after takeoff from Denver International Airport, Saturday, Feb. 20, 2021, in Denver, Colo. The flight landed safely and none of the passengers or crew onboard were hurt. (Chad Schnell via AP)

In this image taken from video, the engine of United Airlines Flight 328 is on fire after after experiencing "a right-engine failure" shortly after takeoff from Denver International Airport, Saturday, Feb. 20, 2021, in Denver, Colo. The flight landed safely and none of the passengers or crew onboard were hurt. (Chad Schnell via AP)

Feb. 22, 2021 12:11 PM EST
A man looks over debris that fell off a plane as it shed parts over a neighborhood in Broomfield, Colo., Saturday, Feb. 20, 2021. The plane was making an emergency landing at nearby Denver International Airport. (AP Photo/David Zalubowski)

A man looks over debris that fell off a plane as it shed parts over a neighborhood in Broomfield, Colo., Saturday, Feb. 20, 2021. The plane was making an emergency landing at nearby Denver International Airport. (AP Photo/David Zalubowski)

Feb. 20, 2021 10:01 PM EST
A part from a United Airlines jetliner sits in the middle of Elmwood Street in the street near a home peppered by parts from a plane as it was making an emergency landing at nearby Denver International Airport Saturday, Feb. 20, 2021. (AP Photo/David Zalubowski)

A part from a United Airlines jetliner sits in the middle of Elmwood Street in the street near a home peppered by parts from a plane as it was making an emergency landing at nearby Denver International Airport Saturday, Feb. 20, 2021. (AP Photo/David Zalubowski)

Feb. 20, 2021 10:13 PM EST
A piece of an airplane engine is seen in the median along Sheridan Boulevard near E. 13th Avenue, Saturday, Feb. 20, 2021, in Broomfield, Colo. Debris from a United Airlines plane fell onto Denver suburbs during an emergency landing Saturday after one of its engines suffered a catastrophic failure and rained pieces of the engine casing on a neighborhood where it narrowly missed a home. (Andy Cross/The Denver Post via AP)

A piece of an airplane engine is seen in the median along Sheridan Boulevard near E. 13th Avenue, Saturday, Feb. 20, 2021, in Broomfield, Colo. Debris from a United Airlines plane fell onto Denver suburbs during an emergency landing Saturday after one of its engines suffered a catastrophic failure and rained pieces of the engine casing on a neighborhood where it narrowly missed a home. (Andy Cross/The Denver Post via AP)

Feb. 20, 2021 07:48 PM EST
This Saturday, Feb. 20, 2021 photo provided by Hayden Smith shows United Airlines Flight 328 approaching Denver International Airport, after experiencing "a right-engine failure" shortly after takeoff from Denver. Federal regulators are investigating what caused a catastrophic engine failure on the plane that rained debris on Denver suburbs as the aircraft made an emergency landing. Authorities said nobody aboard or on the ground was hurt despite large pieces of the engine casing that narrowly missed homes below. (Hayden Smith via AP)

This Saturday, Feb. 20, 2021 photo provided by Hayden Smith shows United Airlines Flight 328 approaching Denver International Airport, after experiencing "a right-engine failure" shortly after takeoff from Denver. Federal regulators are investigating what caused a catastrophic engine failure on the plane that rained debris on Denver suburbs as the aircraft made an emergency landing. Authorities said nobody aboard or on the ground was hurt despite large pieces of the engine casing that narrowly missed homes below. (Hayden Smith via AP)

Feb. 21, 2021 05:56 PM EST