Washington -The flight route crossing a short runway with an altitude requirement close to unstable is a fatal collision of American Airlines Airplanes on Wednesday night and US Army Black Hawk Helicopter near Ronald Reagan National Airport. Experts told the post that there was a possibility.
Authorities have not yet provided causal information behind the crash -the most fatal air disaster in the United States for more than 20 years -but Sean Duffy, Leader Sean Duffy, is “absolutely” tragic. I stated.
The post talked to some aviation experts about many factors that could contribute to a fatal collision.
Originally, Reagan, built by a private or government jet to shuffle the capital of the country, is a smaller airport and physically the only airport in the district.
According to John Light, a former American Airlines pilot, the standard 13,000 feet runway at other airports built to accommodate large -scale commercial jets The runway is almost half the length of the runway on the runway on the runway of 13,000 feet.
“The first few times you fly there, you are usually with you [a fellow pilot] Who really experienced it? He is also discussing it, “Light told the post.
“Where you land [runways] The length of 13,000 feet has enough room to play. But [Reagan] It is only 7,000 feet. “
He said that the shorter the runway, the more difficult it is to descend and the need to concentrate on pilots.
Aviation controller audio -captured operators warned that military helicopters are approaching American Airlines 5342 flights and instructing them to pass behind passenger aircraft.
“It's a very challenging airport to focus on a jet airplane. In fact, there is air speed, altitude, and descent rate,” he said, “The last thing you are looking for is someone. Make sure you are intersecting.
Nevertheless, he said, “It is completely possible to operate safely in Reagan International. Of course, I did it for 50 years.”
In addition to the short runway, the intersection of the flying routes with high advanced requirements can also play a role in tragedy.
According to the official flight map, there are two flight routes for helicopters that converge near Reagan Airport.
The helicopter is instructed to fly over 200 feet in the path, but the airplane needs about 500 feet, the aircraft aerial lawyer and former pilot Jim Browkle told the post.
“The approach to the runway, which is the approach to the runway, is basically flying on the east side. [Potomac] Approximately one and a half after the touchdown, the aircraft will make this 50 -degree turn and go to the land, “he said.
“And when it turns that turn, it's just under 500 feet, then it will get off,” he explained.
“Well, there is also a helicopal route that goes right below the river of 200 feet or less, and you have an intersection that is clearly equipped with only a few hundred feet. This is an error margin. There is not much room.
In addition, the Federal Aviation Bureau's rules enable the pilot to deviate from the specified altitude of 75 feet.
“Hypothesis … it's a 150 -foot difference,” he said.
“If there is a separation of about 200 feet first, it is [airplane and helicopter] Within 50 feet to each other. “
Light said the helicopter said, “I shouldn't have crossed the flight route at any altitude at the time.”
“For some reason, something broke between the helicopter clearance and something collapsed between the aviation control tower,” said the previous pilot.
“It's a kind of very preventive accident, but it didn't happen even if I followed the normal procedure.”
