The engine of the United Airlines Boeing 777 ignited last weekend after departing from Denver International Airport, the Bombardier plane flying from Donver to Billings, Monta, declared a state of emergency when one of its engines flew shortly after takeoff. The plane landed safely 20 minutes after takeoff.
Nearly a year ago, the crew of an Airbus 321 operated by American Airlines, flying to Charlotte, NC, Philadelphia, Philadelphia, had to stop flying when one of its engines stopped after the flight. The plane landed safely again 13 minutes after takeoff.
And so, on February 3, 2020, Spirit Airlines flew from Fort Myers, Chicago, to Chicago. Minutes after takeoff, the passengers heard several loud explosions and saw flares of fire from the left engine of the Airbus A320. The pilots landed safely on the plane 15 minutes after the flight.
These and other recent examples of half-engine failures, including the recent crash of a Boeing 777 currently under investigation by the National Transportation Safety Board, demonstrate the ability of modern commercial aircraft to fly long after a single engine has stopped.
Aviation records from the last 24 months show nearly two dozen reports of commercial aircraft operating in the United States, such as engine failure due to engine failure or engine shutdown due to mechanical problems. In each case, they have seized it, despite obstacles we can scarcely imagine. “
Some of the larger commercial airplanes are powered by four engines and can only be operated by three if needed. But even with two-engine commercial aircraft, each individual engine has enough power to keep the entire aircraft flying long distances, according to aviation experts.
“The overall system is designed with the knowledge that man-made components will sometimes fail,” said Clint Balog, an associate professor at Embry-Riddle Aviation University.
And pilots regularly train for such misfortunes.
“We spend a lot of time on single-engine training,” said RD Johnson, a former fighter pilot and retired American Airlines captain who now flies corporate aircraft. “It’s quite natural for an experienced pilot.”
This became clear during the flight of the United Airlines Boeing 777, which was flying from Denver to Honolulu on Saturday with 229 passengers and 10 crew members. According to investigators, as soon as the plane reached an altitude of 12,500 feet, the crew և the passengers heard a loud explosion and felt that the plane was vibrating. The pilots declared a state of emergency, turned the plane around և and landed in Denver 20 minutes later.
Parts of the projectile containing the engine disintegrated, fell to the ground, some pieces landed in the front yards, on the football field. Inspectors found little damage, but NTSB President Robert Samwalt told reporters this week that there did not appear to be any structural damage from debris leaking out of the engine.
NTSB inspectors are focusing their research on two engine fan blades that appear to have broken due to metal fatigue, resulting in damage to the engine crankshaft.
The Federal Aviation Administration has ordered to increase inspections of Pratt & Whitney 4000 series engines from the fan blades, the type used on the aircraft.
Boeing over the weekend advised to shut down 69 operating և 59 spare 777 aircraft worldwide using the same Pratt & Whitney engines until further notice. Federal officials say Pratt & Whitney 4000 series aircraft are used only by the United States, South Korea and Japan. Only United flies with this engine in the United States. The airlines landed on the plane before the investigation.
The incident was the latest in a series of similar accidents involving Boat 777s with Pratt & Whitney engines.
On February 13, 2018, the passengers of United Airlines Flight 777 from San Francisco to Honolulu had a similar engine malfunction over the Pacific Ocean. The plane landed safely in Honolulu. The NTSB concluded that the fan blade inside the engine had broken, causing a malfunction.
On December 4, Air Aponia Airlines Flight 777 of the same engine crashed while flying from Okinawa to Tokyo. Part of the engine cover և the fan blade is damaged. The plane landed safely in Okinawa.
A statement from Pratt & Whitney on Tuesday said it was cooperating with regulators and airlines, Boeing, that security was “our top priority”.
As for the plane that crashed last weekend, Sumwalt said that its damaged parts պատմ maintenance history will be discussed. He said the cockpit flight recorder had been moved to Washington, DC.
“We will be very deliberate in passing all the inspections and maintenance records,” Sumwalt said.
Pilots who have had engine crashes say that piloting a single-engine aircraft requires a great deal of cunning.
“The general issue is control,” said Doug Moss, a retired test pilot and retired United Airlines senior. He said that while working at United, he once had to turn off the engine of a Boeing 727 because his windpipe was blocked.
Using Moss and turning off the other, Moss said the plane wanted to “slide sideways.”
He said he had to reverse it by engaging the steering wheel, but in moderation.
“It’s a skill set,” Moss said. “You have to use a lot of muscular memory. It’s like basketball dribbling. You have to do it several hundred times before you get it. ”