Disregard first map
here is another one:
"This map depicts several International Civil Aviation Organization (ICAO) flight information regions (FIRs). Air traffic controllers lost contact with Malaysia Airline Flight 370 near the region where Malaysia, Thailand, Vietnam and Singapore FIRs intersect (marked by the red dot)."
Courtesy of the International Civil Aviation Organization scientificamerican.com
eta:deleting first map
Thanks. They turned at that point, they went to around that dot on the west side of the peninsula. Then they zig-zagged their way up to around that dot to the west of Phuket, Thailand. They had to zig-zag b/c they were trying to toe the line, and the they were trying to align themselves in a "lost zone" area. Their trajectory follows almost exactly that northwest ATC border line to the west of Malaysian peninsula.
The question I have also been asking myself is - why didn't they just take a flight from Jakarta? Turn off transponder, turn, and you are out in the Indian Ocean. Perhaps they needed the confusion in ATC b/w two countries? Or otherwise Indonesia ATC would have immediately noticed if some plane just fell off its radar? There is no close ATC switch-off. Indonesia ATC would have been watchiing the plane for a long time. I'm assuming this is the reason. They needed the "lost zone" of confusion b/w two ATC. ??
JMO.