You make some good points........however I am not an Airbus expert....but I am a B707 & 747 maintenance expert. I have also worked in aviation maintenance for too many years to mention, wth a number of airlines and OEMs, mainly Boeing!!!
But, knowing that the A320 aircraft is a “fly-by-wire” aircraft and, although it is a fully safe operating system under normal operational modes, a major destruction of computor components and inputs can quickly cause severe loss of active or prevent manual flight control!!! I get nervous when I note that all smoke/fire activity as sent from the “ACARS” inputs is located in the same area...the cockpit, cockpit windows, the left foward lavatory and the E&E lctrical/avionics, control compartment where the flight contol computors are located.
Now......my input is just me thinking out loud....but I am 100% sure that Airbus Engineering knows exactly what happened, based on the input from “ACARS”. If this model of Airbus aircraft has had a long list of these type failures, I could see keeping an open mind. But, no such history trail exists. All are silent on both the Captain & First Officer & no “Mayday” call from either of the flight crew. Airbus can quickly calculate the ACARS failure messages in a time lapse and know whether sufficient time was available for a crew “Mayday” radio call or not!!! Like I say Airbus has a darn good idea exactly what happened on the doomed airplane and, I believe, they believe their aircraft was not al fault & terrorism is at fault.....set off by either one or both of the flight crew or, an invader into the cockpit or lavatory, setting off the bomb device of in a strategic location. I stiil smell the Muslim Brotherhood/ISIS cartel are the villians of this massive planned and successfully carried out massacre...and, they for obvious reasons of the Obama/Clinton adoration of MB/ISIS want to remain silent. We shall see, although, Airbus and the involved governments, including the USA, will spin this incident out over a prolonged period of time. The truth and timely relaease of such is not at the top of the list for the media, the governments, the aircraft manufacturer. The public, and, sadly, the relatives and loved ones of those murdered on this ill fated airplane take it in the shorts once again!!!!
Just FYI, none of the ACARS alarms were actually *in* the cockpit. All the alarms were areas behind bulkheads initially and except for the lavatory smoke warning are in areas you *cannot* get access to while the aircraft is in flight, at least not without setting off all sorts of other alarms. The alarm zones are around, behind, and under the cockpit, but nothing actually *in* the cockpit while the plane’s ACARS was still working.