Flight UA328 bound for Honolulu's Daniel K. Inouye International Airport was forced to return to Denver just a few minutes into the flight after the right-hand engine malfunctioned.
Check out these photos that were captured and posted out in Broomfield, where police shared images of massive chunks of debris from what appears to be the turbine engine and other parts of the plane laid scattered about on the lawns of folks in neighborhoods below.
The Boeing 777 landed safely, and there were no injuries reported.
Broomfield Police said parts had fallen in the areas of 136th and Sheridan, and 13th and Elmwood.
Passengers onboard described a "large explosion" shortly after take-off.
Officials are investigating how the malfunction occurred
United Flight 328 was flying from Denver to Honolulu when it experienced a right-engine failure shortly after takeoff, according to the Federal Aviation Administration.
He added that he and his wife placed their wallets in their pockets so that "in case we did go down, we could be ID'd".
"The plane started shaking violently, and we lost altitude and we started going down", said David Delucia, who was sitting directly across the aisle from the side with the failed engine.
Witnesses heard a loud explosion, then saw smoke and falling debris in the sky. They said there are no reports of injuries from falling debris at this time.
The National Transportation Safety Board (NTSB) is investigating the incident and has asked area residents to report any debris they find but avoid touching it, due to the risk of hazardous chemicals. "Debris started raining down, which you know, sort of looked like it was floating down and not very heavy, but actually now looking at it, it's giant metal pieces all over the place".