Indonesia's transport minister Ignasius Jonan working back from nearly half the data already transcribed from the Air Asia Flight 8501 'black box' is tonight claiming the AirAsia plane that crashed last month killing all 162 passengers and crew on board was climbing "at an abnormally high rate, then plunged and suddenly disappeared from radar screens".
Ignasius Jonan told Parliament that data showed the Airbus A320 was climbing at about 6,000 feet a minute before it disappeared on Dec. 28th .
"It is not normal to climb like that, it's very rare for commercial planes, which normally climb just 1,000 to 2,000 feet per minute," he said. "It can only be done by a fighter jet."
He confirmed the plane then plunged toward the sea and disappeared from radar.
In the last contact with air traffic controllers, the pilots of AirAsia Flight 8501 asked to climb from flight level 32,000 feet to FL 38,000 feet to avoid multiple threatening weather systems, but the crew were denied permission because of nearby heavy air traffic. Four minutes later, the plane disappeared. No distress signal was squawked or recorded.
An excessively rapid ascent ie nose up stall position is likely to cause an airplane to go into an aerodynamic stall.
In 2009, an Air France Airbus A330 disappeared over the Atlantic Ocean in bad weather while flying from Rio de Janeiro to Paris. Investigators were able to determine from the jet's "black boxes" that it began a steep climb and then went into a stall from which the pilots were unable to recover.
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