Originally Posted by YouNeverStopLearning
Turn back is is understandable, but they didn't quite make it round to anywhere near to 180 degrees...
Malaysia-today postulates that "The Malaysia military took full delivery of one of the advanced Thales Raytheon Systems early last year with an integrated Sentry command and control system and the Ground Master 400 3D radar.
According to Thales, the MADGE system operates in real-time and features multi-radar tracking and a flexible human-machine interface.
The GM 400 radar also provides long-range surveillance capabilities for the Royal Malaysian Air Force.
Its reach is up to 400 km and it is more than sufficient to detect the MH370." Further " It is now clear that the four-man crew in the three air defence stations, who were supposed to be watching the radar screens, either did not notice or failed to report to their superiors that an unidentified plane was flying across the country."
So a high tech radar system was unmonitored and then when the lights came on, formed the basis of the turnback.
Possible scenarios along corridor routes then.
