Flight computers in the heart of Air France crash?

Some Brazilian warship, French submarines, two towing vessels and Dutch high-tech U.S. Navy listening devices are scouring preparations Atlantic for any signs of pinging beacons from aircraft data recorders, known as black boxes. Pinging signals weaken days and is designed to last two weeks.

"We will continue to date that technically we decide searches are useless," Nelson Jobim, Brazil Defense Minister, told a Brazilian news agency today.

Black boxes to hold data that may help unlock the mystery of what caused the Airbus 330 flight apparently two hours, and to dive in the Atlantic 1 in June during a flight from Paris to Rio de Janeiro.

Without the black box data remaining issues will fuel speculation about the safety of the A330 and other aircraft as automated. Preliminary examination shows some of the bodies recovered from 49 aircraft destroyed in flight, but there was no evidence of an explosion.

This prompted a new round of concern among some pilots and aviation analysts computerized aircraft flight control systems may have malfunctioned, which has started a chain of events that pilots could not recover.

While the search for black boxes of Air France Flight 447 continues, some drivers have raised new concerns about the safety of the Airbus 330 to the computerized flight.

Brazilian and French authorities said Tuesday that would require the Air France Flight 447, insofar as there is no hope of finding the Flight.

The reason for concern is that the A330 Family aircraft have recently suffered a series of potentially catastrophic computer anomalies. In one case cause unpredictable computer commands two hours A330 suddenly pitch nose down until he could regain control, according to a report from the Bureau of Transportation Safety Australia [PDF]. This incident took place in October with the A330, operated by Qantas Airways. The aircraft diverted to the nearest airport and landed safely, but 11 passengers and crew were seriously injured. A similar incident occurred on Qantas A330 in December.

But Airbus and other analysts who produce A330, warning against such speculation, according to which all parallels are superficial at best. Component responsible for the Qantas A330 unpredictable movements, computer, known as the Air Data Inertial Reference Unit (ADIRU), is made from a manufacturer other than one installed on Air France A330, Airbus says the speaker.

This has led some analysts and pilots to focus on the aircraft computer systems.

"The Python pipes are only part of the automatic system and if they are poor nutrition and autopilot autopilot system itself has problems, you can see how this can be a chain of events, Cascading," said Lee Gaillard, Aviation analyst Saranac Lake, NY

The Airbus 330 is one of the automated aircraft flying today. Like many newer aircraft's flight control systems operated by "fly by wire" system, meaning that they are not removed from the flight control cables and reduces power, but they are controlled. In short, this means that when a pilot will be components such as ailerons - which is in the wings and control aircraft roll in the longitudinal axis - it moves the cockpit controls, which sends electronic signal to the ailerons hydraulic mechanism, then the ailerons move in the direction of the pilot . In the heart of this system is a computer, directing the flow of information between the pilot and aircraft components.

Airbus has taken a step further with this system compared to other manufacturers, according to A330 pilot. This is because it also seeks to different computers in the system of protection that automatically goes in the level of the components if the flight is suddenly thrown off course by strong air current, or some other natural event, or if a pilot makes it just a mistake.

But this explanation does not mollify some A330 pilots who say that they had an exceptional computer anomaly in the year of their A330 cabin.

"The issue is not done with the Air France plane has the same computer as Qantas, but [rather] a computer error can create a modern jet? An A330 pilot wrote in an email, wishing to remain anonymous because he was not authorized to speak with the press. "The answer is" yes "on the basis of the control of Airbus aircraft.

In recent weeks, speculation about what caused the accident focused on Python sensors, small pipes in the aircraft airspeed, before sending information about flights on different computers. In high altitude, some older sensors Python freezes and can lead to false testimony in connection with an aircraft speed. AF447 just before the disappearance, has sent a flurry of computer error messages that appear contrary to the reading speed Python pipes. Last week, Air France, python pipes replace all his Airbus 330s as a precaution.

But sources in the airline and Airbus say Python problems with sensors that can give false readings will be accelerated by itself be sufficient to bring down the plane.