Home
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Home
Forums
Brown Cafe Community Center
Current Events
Air France
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="unionman" data-source="post: 543064" data-attributes="member: 21107"><p><span style="font-family: 'Arial'">The Air France jet that crashed into the Atlantic killing 228 may have stalled after pilots slowed down too much as they encountered turbulence, new information suggests.</span></p><p> </p><p><span style="font-family: 'Arial'">Airbus is to send advice on flying in storms to operators of its A330 jets, Le Monde reported today. It would remind crews of the need to maintain adequate thrust from the engines and the correct attitude, or angle of flight, when entering heavy turbulence.</span></p><p> </p><p><span style="font-family: 'Arial'">Pilots slow down aircraft when entering stormy zones of the type encountered by Air France Flight 447 early on Monday as it was flying from Rio to Paris.</span></p><p> </p><p><span style="font-family: 'Arial'">The fact that the manufacturer of the aircraft is issuing new advice indicates that investigators have evidence that the aircraft slowed down too much, causing a high-altitude aerodynamic stall. This would explain why the aircraft apparently broke up at altitude over the Atlantic.</span></p><p> </p><p><span style="font-family: 'Arial'">Jean Serrat, a retired airline pilot, told Agence-France Presse: "If the BEA [accident investigation bureau] is making a recommendation so early, it is because they know very well what happened. If they know what happened, they have a duty to make a recommendation, for safety reasons ... The first thing you do when you fly into turbulence is to reduce speed to counter its effects. If you reduce speed too much you stall."</span></p><p> </p><p><span style="font-family: 'Arial'">Although the flight recorders lie about 12,000ft below the ocean surface, the BEA has data on the last four minutes of Flight 447, transmitted automatically by satellite to Air France's base at Paris Charles de Gaulle airport.</span></p><p> </p><p><span style="font-family: 'Arial'">A stall, in which the wings lose lift and the aircraft becomes uncontrollable, would be consistent with the sequence of events that have leaked to the media from the Air France data. According to this, the first anomaly was the disconnection of the automatic pilot and computerised flight controls. This means that the pilots were hand-flying the aircraft.</span></p><p> </p><p><span style="font-family: 'Arial'">It is not known whether Captain Marc Dubois, 58, was at the controls or just his two co-pilots, who were in their 30s.</span></p><p> </p><p><span style="font-family: 'Arial'">A stall at 35,000ft – the altitude at which Flight 447 was cruising – is hard to recover from in still air. In the heart of a furious tropical storm at night, it could be near impossible. High-altitude stalls claimed several aircraft in the early days of jet aircraft.</span></p><p> </p><p><span style="font-family: 'Arial'">Speculation over the fate of Flight 447 continued to rage as ships began trawling the crash area, spread over a 200-mile stretch. Debris, including airliner seats, has been identified from the air, about 800 miles off the Brazil coast. No bodies have been spotted</span></p><p> </p><p><span style="font-family: 'Arial'">Nelson Jobim, Brazil's Defence Minister, said that a 12-mile-long slick of fuel had been found under the planned route of the Airbus. This meant it was improbable that there had been a fire or explosion, because the jet fuel would have ignited, he said.French experts dismissed this theory, noting that an explosion could fracture the fuselage and cause the break-up of an aircraft without igniting the fuel, which is mainly carried in the wings</span></p><p> </p><p> </p><p><span style="font-family: 'Arial'"><span style="color: #0000ff"><a href="http://www.timesonline.co.uk/tol/news/world/europe/article6430398.ece" target="_blank">Source</a></span></span></p></blockquote><p></p>
[QUOTE="unionman, post: 543064, member: 21107"] [FONT=Arial]The Air France jet that crashed into the Atlantic killing 228 may have stalled after pilots slowed down too much as they encountered turbulence, new information suggests.[/FONT] [FONT=Arial]Airbus is to send advice on flying in storms to operators of its A330 jets, Le Monde reported today. It would remind crews of the need to maintain adequate thrust from the engines and the correct attitude, or angle of flight, when entering heavy turbulence.[/FONT] [FONT=Arial]Pilots slow down aircraft when entering stormy zones of the type encountered by Air France Flight 447 early on Monday as it was flying from Rio to Paris.[/FONT] [FONT=Arial]The fact that the manufacturer of the aircraft is issuing new advice indicates that investigators have evidence that the aircraft slowed down too much, causing a high-altitude aerodynamic stall. This would explain why the aircraft apparently broke up at altitude over the Atlantic.[/FONT] [FONT=Arial]Jean Serrat, a retired airline pilot, told Agence-France Presse: "If the BEA [accident investigation bureau] is making a recommendation so early, it is because they know very well what happened. If they know what happened, they have a duty to make a recommendation, for safety reasons ... The first thing you do when you fly into turbulence is to reduce speed to counter its effects. If you reduce speed too much you stall."[/FONT] [FONT=Arial]Although the flight recorders lie about 12,000ft below the ocean surface, the BEA has data on the last four minutes of Flight 447, transmitted automatically by satellite to Air France's base at Paris Charles de Gaulle airport.[/FONT] [FONT=Arial]A stall, in which the wings lose lift and the aircraft becomes uncontrollable, would be consistent with the sequence of events that have leaked to the media from the Air France data. According to this, the first anomaly was the disconnection of the automatic pilot and computerised flight controls. This means that the pilots were hand-flying the aircraft.[/FONT] [FONT=Arial]It is not known whether Captain Marc Dubois, 58, was at the controls or just his two co-pilots, who were in their 30s.[/FONT] [FONT=Arial]A stall at 35,000ft – the altitude at which Flight 447 was cruising – is hard to recover from in still air. In the heart of a furious tropical storm at night, it could be near impossible. High-altitude stalls claimed several aircraft in the early days of jet aircraft.[/FONT] [FONT=Arial]Speculation over the fate of Flight 447 continued to rage as ships began trawling the crash area, spread over a 200-mile stretch. Debris, including airliner seats, has been identified from the air, about 800 miles off the Brazil coast. No bodies have been spotted[/FONT] [FONT=Arial]Nelson Jobim, Brazil's Defence Minister, said that a 12-mile-long slick of fuel had been found under the planned route of the Airbus. This meant it was improbable that there had been a fire or explosion, because the jet fuel would have ignited, he said.French experts dismissed this theory, noting that an explosion could fracture the fuselage and cause the break-up of an aircraft without igniting the fuel, which is mainly carried in the wings[/FONT] [COLOR=blue] [/COLOR] [FONT=Arial][COLOR=#0000ff][URL="http://www.timesonline.co.uk/tol/news/world/europe/article6430398.ece"]Source[/URL][/COLOR][/FONT] [/QUOTE]
Insert quotes…
Verification
Post reply
Home
Forums
Brown Cafe Community Center
Current Events
Air France
Top