How to appear invisible to civilian radar?
There's a lot of talk about how MAS370 could have evaded several countries' civilian ATC radar (and by implication their military search radar). Has anyone considered maybe it didn't?
Admittedly, all my experience is in North America, but couldn't a flight plan be filed and picked up by the errant flight, and its transponder re-engaged (or another one brought online), allowing it to proceed on its merry way? It could even masquerade as some country's military flight.
No better place to hide something than in plain sight...