How many times has a jet airline flight suffered a major structural failure not caused by an explosive weapon, which disabled it so suddenly that the flight crew never sent a subsequent radio message?
I haven't yet thought of an example. Anybody?
plenty post 1970
how about
China 747
adam air 737
Egyptair 990
Lauda Air 767
Air Asia A320
Gol 737
plus plenty of crashes such as Gulf air Armenia and XL A320's Birgenair 757
and Flash KQ and ET 737's that did not transmit
all where the crews did not manage any distress call