To address the questions of how the plane could fly so far into the northern corridor without being detected...here is a thought.
I know that it's the stuff of movies, but there is solid science that two aircraft flying closely together can appear as one single radar blip. If you have the expertise to turn off acars and transponder and whatever else, then turning off TCAS can't be any harder, right?
If you go back to FlightRadar24, and look for a flight that MH370 could have shadowed...there is at least one possibility.
Take a look at KL836 and consider this timeline:
1:21am: MH370 transponder shut down
1:42am: KL836 departs Singapore for Amsterdam, with an initial flight path going NW
up the Malacca strait.
2:15am: military radar sees MH370 approximately 200 miles NW
At this point, KL836 is about 25 minutes "behind" MH370, assuming MH370 were on the same flight path. MH370 is practically directly in the flight path of KL836.
Presume then that MH370 flies slower while crossing the Bay of Bengal, and by the time they are back under primary radar coverage - MH370 is now carefully and closely trailing KL836, and flies onward across India, Pakistan and Afghanistan while doing so.
Also, remember the noise made about flying at 29,500 ft altitude? the KLM was at 30,000; 29,500 seems like a logical place to fly if you intend to meet up with someone at 30,000 in the near future.
MH370 was in the right place at the right time to follow KL836[Edited 2014-03-15 02:01:12][Edited 2014-03-15 02:03:24][Edited 2014-03-15 02:10:02][Edited 2014-03-15 02:26:11]
[Edited 2014-03-15 02:28:10]