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Home / US / Boeing 777 engine failure: This is what we know about United Airlines that suffered engine damage near Denver

Boeing 777 engine failure: This is what we know about United Airlines that suffered engine damage near Denver



According to investigators, Pratt & Whitney’s engine failed within minutes of United Flight 328 from Colorado to Hawaii, leaving a mile of debris. After the incident, United Airlines grounded all Boeing 777s powered by PW4000 series engines.
According to information from the National Transportation Safety Board (NTSB), a preliminary investigation revealed that the damage was “consistent with metal fatigue”, and the board has prompted federal regulators to re-examine engine inspections.

The company stated: “Pratt & Whitney is actively coordinating with operators and regulators to support the revised inspection interval for the Pratt & Whitney PW4000 engine that powers the Boeing 777 aircraft.”

; “Any further investigation updates regarding this incident will be determined by the NTSB. Pratt & Whitney will continue to work hard to ensure the safe operation of the fleet.”

What happened during the flight

“United Airlines 328 Heavy-Mayday Mayday… Denver departs. United Airlines 328 Heavy Mayday. The aircraft has just experienced an engine failure-it needs to turn immediately,” the air traffic sound of the aircraft sounded on Saturday.

Investigators said that the PW4000 engine has 22 blades, one of which was found hidden in the containment ring of the jet engine. Another one was found in a football field in Broomfield, Colorado.

On Monday, investigators said that one of the blades of the right engine of the plane had loosened on the hub and it was likely that it had hit another blade that broke in the midspan. NTSB Chairman Robert Sumwalt said that the damage shown by the former was “consistent with metal fatigue.”

Pilot: What happens in emergency situations such as United Airlines 328

Sam Walter said the flight fuselage also damaged non-critical composite parts that are designed to make the aircraft more aerodynamic.

According to the video of passenger Travis Loock, on the plane, passengers saw the engine completely peeled from its casing.

Loock told CNN that he was in a nervous mood, but when the pilot continued to say they would land in four minutes, everyone was “very calm.”

Passenger Brenda Dohn said: “My daughter is sitting on the window…I’m like,’Don’t look, let’s close it, let’s pray”.

Traces of destruction

No passengers were injured. The residents around Broomfield did not emerge from the falling debris that stretched for a mile.

Rachel Welte, a spokesperson for the Broomfield Police Department, told reporters on Saturday: “We have sent police officers and within a few minutes we were actually on the scene of some of the houses, and we actually I saw some of these fragments.”

Engine failure on United Airlines flight caused debris to fall outside Denver

Welt said that looking at the debris field and how busy the area is, “the fact that we still haven’t received any harm at this point is absolutely shocking.”

“In this park on a day like today, the weather was not as cold as last weekend. We may have hundreds of people here.”

KCNC, an affiliate of CNN, said that the cab of the truck of Kirby Klements, a resident of Broomfield, strongly reminded people that it was damaged: the hood fell and fell in. Cab.

“I’m sitting here looking at the trash sitting in my driveway, thinking:’Oh my God, what should I do now?'” Clements said of the vehicle in which he invested so much time and money .

When Kieran Cain was playing basketball with his children at an elementary school in Greater Denver on Saturday afternoon, he heard it sounded like a loud sound, and then raised his head.

Cain told CNN: “We can see black clouds in the sky high in smoke, followed by the appearance of the airplane.” “Basically, it’s something falling from the sky.”

Carole Walker of the Rocky Mountain Insurance Information Association told KCNC that it may take some time for community members to receive payment from United Airlines, but most standard insurance plans should cover “objects falling from the sky.”

After taking off from Denver International Airport, the right engine of United Airlines Flight 328 malfunctioned.

Next survey location

Sam Walter said the problematic engine will be removed from the plane for further inspection.

After flying to the Pratt & Whitney Lab by private jet on Monday night, part of the blade will be inspected on Tuesday. Investigators believe that they can determine how long the blade has been damaged before it is damaged.

After Denver's engine failure, airlines landed dozens of Boeing 777 aircraft
A tweet from the Broomfield Police Department stated that the NTSB arrived in Colorado on Saturday and began to transport the debris to the hangar for further inspection. The agency’s investigators in Washington, DC have already begun to analyze the flight’s cockpit voice and flight data recorders, and have not yet checked United Airlines’ maintenance records.

Due to an engine failure, Boeing recommended to stop using 777 aircraft equipped with Pratt & Whitney 4000 engines, and United Airlines has cancelled them after the incident. The FAA also issued an emergency order earlier on Sunday saying it would strengthen inspections of Boeing 777 aircraft equipped with certain Pratt & Whitney PW4000 engines.

CNN’s Gregory Wallace, Pete Montain, Holly Silverman, Alta Spices, David Williams, Constantine Torobin, Chuck John Stone, Andy Rose, Gregory Clary and Lucy Kafanov contributed to this report.




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