- Posted June 8, 2009 by
Rio de Janeiro Brazil, Brazil
This iReport is part of an assignment:
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Air France Flight Simulation af447
Captain was not caught by surprise by storm, says expert
In the Airbus flight simulator, instructor says it is best to avoid bad weather.
Plane may have been only a major collapse, says instructor.
A simulation of the flight 447, Rio, Paris, shows that the captain of the Airbus A-330, Air France, which fell in the Atlantic Ocean on the last Sunday in May (31), led the plane by a storm that had a top 18 km. Why? The answer is one of the puzzles of the case.
"He (the captain) was not caught by surprise," says one of the experts heard by the "Fantastic," which used the simulator of the flight deck of the Airbus to seek some explanations.
A pilot with 17 years experience says: "It is impossible to pass? It is not impossible.It is recommended? It is not. ", Says José Mauro Lins de Oliveira. The instructor pilot and Luiz Almeida, 24 years of experience, says: "I would depart, no doubt."
And it was not for lack of information because, according to the professor of Atmospheric Sciences at USP, the crew knew that the storm would find the way to France. But the mechanical engineer, pilot and accident investigator for Jeffeerson Fragoso believes that instead of a series of Panesar, the plane may have been only a major collapse and fall into four minutes:
"If there is a fracture at the structural level flight they were - 34, 35 thousand feet - you take just four minutes to get to the ground, right?" Says Fragoso.
The sequence of events
19:00 - The Airbus was ready for the departure of the airplane from the International Airport Tom Jobim. As is common in such flights, passengers in first class and executive sit on the front.Above, those of economy class travel.
19:30 - The plane with capacity for 219 passengers take off with only three empty seats. The crew consists of three pilots and nine commissioners. The captain of the Airbus knew would find storm, but the first time, the situation was very quiet:
Professor of Atmospheric Sciences at USP, Augusto José Pereira Filho, explained that the overflight in Ocean Altântico started smoothly:.
"Going up, he entered the high-Atlantic area where you have no cloud, flying very quiet, but very quiet up here in this region."
Pilot for 17 years and experienced the same type of aircraft, José Mauro Lins de Oliveira said that the pilots knew that the weather would face: "We received an entire programming weather throughout the route, according to this program you along with some crew actions during the flight. "
21:00 - The recovery indicates that the climate on the Atlantic Ocean had been aggravated, with a strong storm. "This storm was fueling other storms that formed a region of very deep storm. It is as if I had the state of Pernambuco in front of him, a wall, "explained the teacher of the USP.
The Center for Control of Air Cindacta 3 is monitoring the weather in the region, as explained Lieutenant-brigadiero Ramon Borges. "We have a system that allows the pilot to communicate with the meteorological center and ask about changes or information that is necessary for him to make correction of your flight."
The instructor pilot and Luiz Almeida believes the weather radar on the aircraft operated, "You have to take off the radar on and do the entire flight with the radar switched on."
22.30: The pilot is the last voice contact with the Brazilian air control, reporting its position.
23:00: The Air France Airbus to send an email message to the airline.
"He pressed a button and opens a page transmitted to the company that it would pass through an area of instability," explained the trainer Luiz Almeida. The pilot José Mauro drew attention to one fact: "He was not caught by surprise."
At this point in the simulation of the trajectory of the aircraft, a few points without reply: "He crossed the storm in the region where the top is the order of 18km," says the professor of the USP. And the pilot Jose Mauro notes:
"It is impossible to pass? It is not impossible. It is recommended? It is not. "
According pilots interviewed by the "Fantastic" by the radar of the plane could see gaps between the nuclei of the storm, which, according to trainer Luiz Almeida, it recommended: "As a pilot, I would depart, no doubt" .
The last moments of flight
23.10: The aircraft rudder and information problems in the auto shutdown.
"The aircraft began to lose altitude," explains Luiz Almeida, while another message showed that the protection systems of the 330 stopped working.
"He is already giving me the first alarm here, the speed is starting to come into an altitude not a flight, an abnormal altitude, Luiz continues as the plane loses anti system, the accelerator and automatic screens with data from flight .
Sitting in the position of the Airbus pilot in the simulator, the instructor says: "Now it is up without my command. You are making a curve on the right, we're starting to lose speed. "
The computers are out of navigation. "You lost your side Copilot," says Luiz. The moment would be a lot of tension, according to the simulation, in a minute the airplane will begin to fall away.The main computers will collapse.
"You see with this loss that we started to fall, are 2,700 feet per minute, the aircraft is putting the nose down. It is a great position to fall, "said Luiz.
In the simulation, the last message indicates loss of cabin pressure. This could indicate that the free fall. "In a very high speed, it begins to disintegrate, the plane starts to disintegrate. He is winning all the packages, increasing the speed, he leaves to the ground, "says Luiz. "What amazed me most was he did not have time to request such relief," says the pilot Joseph Mauro.
A hypothesis: large collapse in the plane
The 24 automatic and electronic messages were sent in only four minutes. The mechanical engineer and pilot Fragoso Jefferson, who is also a researcher of aviation accidents, has a hypothesis: for a series of successive Panesar before the crash, the plane may have been only a major collapse.
"If there is a fracture at the structural level flight they were - 34, 35 thousand feet - you take just four minutes to get to the ground during this period and all the alarms are ringing, all possible information of failure is being sent. It happened over those four minutes? For what we are seeing the evidence, not during the fall this was happening. "
A possible free fall in four minutes also explain why the pilot did not request help. "If he is really to give time for an emergency message, he will surely say: Mayday, Mayday, I'm falling," added Jefferson.
Sorce: Rede Globo Brazil
Translation By: Rogerio Silva
Alpharetta GA USA
a video is also available in Portuguese if you would like to see please go to: http://g1.globo.com/Noticias/Mundo/0,,MUL1186346-5602,00-COMANDANTE+NAO+FOI+PEGO+DE+SURPRESA+POR+TEMPESTADE+DIZ+ESPECIALISTA.html