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There’s a lot of bogus and misleading information floating around about MAS 370.
2. ACARS (the in-flight telemetry system) CANNOT be turned off from the flight deck. Turing ACARS off is quite difficult actually and involves precise knowledge of the electronics (including location) on-board an aircraft (Boeing 777-200 in this case).
3. A transponder disappearing off of a regional ATC (Air Traffic Control) “Center” is a big deal, and generally causes a flurry of communication. It is not simply ignored as if nothing happened.
4. Further to the point illustrated in item #3; aircraft transponders DO occasionally fail. I wouldn’t characterize this as a “regular” occurrence, but it DOES happen periodically. Aircraft transponders are completely independent of radio communications. Just because one fails does not mean the other fails.
5. A commercial airliner cannot descend “40,000 feet” in one minute (60 seconds). It just CANNOT do this. Any report that says this happened is simply wrong. A descent rate of 40,000fpm could not even be accomplished with a nose down powered dive. And, if anyone ever attempted such an act the airframe would structurally fail and break apart well before this descent rate was ever approached. Simply put; it didn’t happen. The data, or the source, is wrong.
6. A commercial airliner, like a Boeing 777-200 (which MAS 370 was), reflects a significant primary radar signature. A “primary” radar signature is different from ‘secondary’ radar which monitors the transponders (noted above). An aircraft the size of a 777 at cruising altitude can be “seen” by primary radar from hundreds of miles away. A un-announced radar contact the size of a triple 7 would be a big deal to just about anyone, especially one which was about to overfly your territory.