luna75 I am THE Pocket Ninja farmingdale ny

now my next question here, im no physics expert but how in the hell can a330 just break up in midair? now we all know that the most a/c nowadays are built using high strength composite materials, lightweight metal alloys etc...what are the breaking/stresspoint for the physical materials used to build the a330? and what physical forces have to be present to cause the plane to breakup? for example, whats the measured psi placed on the fuselage or joints before frame instability and structural failure sets in? or what would it take for structure failure to occur? same thing for the avionics, whats the amount of voltage or amps it would take to completely blow out all circuits and backs up?

and are there any manual, non electronic backups available for the pilot in case all avionics fail?

if anyone wonders why im asking so many technical questions, im just trying wrap my head around why this had to happen, i feel horrible for these people and i hope they didnt suffer long....my heart goes out to their families