Posted on 01/30/2015 7:23:35 AM PST by george76
The pilots of AirAsia Bhd. Flight 8501 cut power to a critical computer system that normally prevents planes from going out of control shortly before it plunged into the Java Sea..
The action appears to have helped trigger the events of Dec. 28, when the Airbus Group NV A320 plane climbed so abruptly that it lost lift and it began falling with warnings blaring in the cockpit..
The pilots had been attempting to deal with alerts about the flight augmentation computers, which control the A320’s rudder and also automatically prevent it from going too slow. After the initial attempts to address the alerts, the flight crew cut power to the entire system, which is comprised of two separate computers that serve as backups to each other..
While the information helps show how a normally functioning A320’s flight-protection system could have been bypassed, it doesn’t explain why the pilots pulled the plane into a steep climb
...
The co-pilot, with 2,247 hours of flying experience, was at the controls and communicating with the ground while the captain, who had 20,537 hours, was monitoring
(Excerpt) Read more at airlive.net ...
Why did George Bush order them to do that?
What?? Why on Earth would the pilots turn the computers off??
“A320’s flight-protection system “
Translation: Socialist Euroweenies trying to tell pilots how to fly a plane. A computer system you cannot trust, so the pilots felt they needed to eliminate it from their problems and turned it off.
Airbus is a dangerous aircraft.
Ask HAL 9000.
The computers were conflicted and screwing up flight control, and so the pilots shut them down in a desperate attempt to get back control of the plane.
So that the pilots could force the plane into a steep climb - that the computers would not allow ?
Obi-wan told them to trust the Force.
Perhaps they thought the computers were giving erroneous information or otherwise defective (as with that Air France crash in the Atlantic a few years back, where defective pitot tube readings made the computers think conditions were better than they were), and they thought they could override them by shutting them off?
(1)There 3 separate computers, not 2.
2. If the suspect airdata system was falsely reading a very high airspeed, the pilots would try to slow it down (nose up) before the pane went past the NTE speed and started breaking up in a dive.
What?? Why on Earth would the pilots turn the computers off??
...
Look at the story of AF447. The computers on an airbus can cause confusion for marginal pilots when there are problems with the sensors.
http://en.wikipedia.org/wiki/Air_France_Flight_447
Got tired of hearing the alarms and did what he should not have done
Likely cause here is these guys were in turbulence/t-storm they never should have flown into and were trying everything, when jsut skirting the weather by 60-70 miles would’e been the right decision. Planes aren’t designed to fly through storms like the one they encountered and they should’ve changed their route.
Automatic Flight Control Systems and Stability Augmentation Systems are pretty standard and politically agnostic. What are you trying to say?
Although speculative at this point, it wouldn’t be the first time pilots were overwhelmed with alarms and what they perceived as false data... the proceeding to make fatal decisions.
That's one way to shut off those annoying buzzers that tell you you're flying wrong.
This is looking like pitot freeze up.
The air trapped in the system expands with altitude, effectively fooling the autopilot that an over-speed has occurred, and commands a climb to reduce speed. That only causes the trapped air to falsely shows a additional speed increase, thus commanding more pitch up.
Finally the Autopilot gives up, and disengage.
Leaving the pilot hauling back on the yolk to reduce the false over-speed.
The angle of attack is so large the they get an engine compressor stall and the airplane,yaws into the dead engine, with a swept back wing then stalls and the plane enters a flat spin, possibly on its back.
It happened before , have a look at “Birgenair Flight 301”
( and that was a Boeing )
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