Originally Posted by
satpak77
An otherwise perfectly normal jumbo jet in the ocean is "evidence of an aircraft malfunction", at least for me. And the terrorist/suicide theory has gained a lot of fans on this thread, and in the media.
Absent information of that, the focus should be on mechanical problems/crew physiological impairment issues/etc
99% of the time there is time for at least one mayday mayday call out flying over the ocean that would be the first thing I would do. Very few malfunctions would take out all three radios, but going silent is the one of the things that can happen during a hijack or crew involvement.