PPRuNe Forums - View Single Post - BREAKING NEWS: airliner missing within Egyptian FIR
Old 4th Nov 2015, 03:58
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andrasz
 
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Originally Posted by peekay4
still only limited conclusions can be made
Limited to asserting that up to 331 the flight progressed normally. FR24 themselves confirm, though with more subtle wording, that NO direct conclusions can be made from the data after 331. The investigators might be able to reconstruct some meaningful information by matching assumed antenna angles and fuselage dynamics with received raw data, but the numbers by themselves mean nothing.

However there is one aspect of the FR24 data which is intriguing. By now it is increasingly clear that an in-flight breakup occurred, with complete loss of control the moment the tail section broke off early in the sequence. Data continued to be received from the aircraft for 25 seconds after the start of the upset, which at least indicates that the relevant systems were powered and transmitting (never mind the data). Can someone with knowledge of the bus power/avionics systems provide a plausible scenario for this ? Is this indicative of the engine generators continuing to supply power until loss of signal, or would there be some automatic reversion to battery power (which would remain available as it is in the front bay) after the engines would have shorn off ? Given the G forces involved it is unlikely the crew would/could do anything.

Last edited by andrasz; 4th Nov 2015 at 04:23.
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