CNN The Situation Room March 11, 2014 22:10:00
Because they haven't switched it on before they take off. it's slightly more complicated to switch off the a-cast system. that requires software knowledge. but one pilot e-mailed me today that that was entirely possible if you knew what you were doing. you could switch off the reporting system. look, i think michael is getting this straight and narrow in the sense that anybody who has read these reports, and they go for hundreds of pages, knows that the final reason is usually something way off what was obvious. ups it is terrorism or ups it is something straightforward like a hijacking. other...
Source: archive.org