Airbus A330-203 Air France AF447: nessuna novità

clipped from aviation-safety.net over a time span of four minutes, starting at 02:10 UTC, a series of twenty-four ACARS messages were sent -automatically- from the plane. The messages indicated amongst other speed measurement inconsistencies, the disconnection of the autopilot and the airplane going into 'alternate law' flight control mode. This happens when multiple failures of redundant systems occur. From 02:11 to 02:13, multiple faults regarding the Air Data Inertial Reference Unit (ADIRU) and ISIS (Integrated Standby Instruments System) were reported. Then on 02:13 the system reported failures of PRIM 1, the primary flight control computers that receive inputs from the ADIRU and SEC 1 (secondary flight control computers). The last message at 02:14 was a 'Cabin vertical speed' advisory. The airplane had descended until it struck the ocean. Visual examination showed that the airplane was not destroyed in flight. It appears to have struck the surface of the sea in a straight line with high vertical acceleration.

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