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Boeing Crashed for Human Factor
Failure of autothrottle system wasn’t the reason of catastrophe, concluded the technical commission probing into the crash of Boeing 737 of Aeroflot Nord in Perm September 14. Now, the supposed error of pilots is the dominating story.
In the first days after the crash of Boeing 737 in Perm, the experts were mostly speaking about the technical failure that killed 88 aboard the jet. One of the stories was the fire and the failure of the engine, another one was the failure of autothrottle system that controlled the speed.
The pilots of Boeing 737 had complained of poor operation of the autothrottle before the crash, but the service workers said it wasn’t vital, deactivated the system and OKed the flight.
But both stories were rejected during the investigation. The experts concluded that the engines operated till the jet hit the ground. As to the autothrottle, it isn’t crucial for piloting and quite a number of Russia’s jets aren’t equipped with it, the experts specified.
“Of technical problems of crashed Boeing, only the slight difference between the thrust of the right and left engines is worth mentioning,” an expert said. “The reason of the tragedy is apparently the pilots’ qualification.”
According to some experts, the Boeing crew got lost when the jet abruptly ascended instead of descending after four turns, which it successfully made by command of the air controller. Disoriented pilots were arguing, where to turn after the traffic controller ordered to repeat the landing. They finally turned to the left, the jet headed for the residential districts of Perm, but deeply leaned to the left wing and picketed to cork-screw.
The pilots of that tragic flight hadn’t amassed great experience on Boeing. Captain Rodion Medvedev had spent the better part of career as the second pilot at Tu-134 and had had just a few thousand hours as the second pilot of Boeing before the final appointement. His partner, Rustam Allaberdin had built his lengthy flying experience mostly on An-24.
www.kommersant.com
All the Article in Russian as of Sep. 24, 2008
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