etudiant
Yes it's true that the flight path over the Malaysian Peninsula is still unknowable in spite of the fact that the Malaysian Military tracked the flight - probably beginning even before the turnaround at IGARI - and recorded the flight path all the way across the peninsula and NW out past MEKAR until it went out of range of the radar at Pulu Penang.
In the first few days after the disappearance, there were leaks from the military postulating an altitude excursion about the time of the turnaround; all such leaks came to an abrupt halt on March 11th, the same day that General Daud, Chief of Royal Malaysian Air Force made his infamous statement beginning: "I wish to state that I did not make any such statements as above." So we were left with an indication that Malaysian radar captured the whole flight and this has been supported by several information releases from Malaysia, particularly the Interim Report. But they have refused to release the details of the flight over the peninsula so much fruitless speculation has occurred about this part of the flight.
It makes it hard to estimate where the plane might have run out of fuel unless we know how much was used up in this part of the flight.
But until the Malaysians are more forthcoming, this will have to remain a blank.