@Etudiant
Various military and government sources have claimed radar detections that have been combined to put this track together, but there has been no independent review that all could reference.
The various sources all support each other and fit like a hand in a glove. No independent review is necessary to see the obvious.
The route reported by the Malaysian Military showed 9MMRO proceeding from the area of Penang towards waypoint MEKAR when it disappeared abruptly at 1822:12 UTC. (We can attribute the abrupt disappearance to 9MMRO reaching the range limit of the Pulu Pinang Radar.)
Calculations of probable airspeeds and distance traveled correlate with graphic images provided by the Malaysians and give a Malaysian radar based position for the plane as about ten miles west of MEKAR at the 18:22 time.
Three minutes later, 9MMRO initiated login to the Inmarsat system. Thus at 18:29 at a point just west of MEKAR, BTO and BFO data were recorded which provided a "ping ring." This 18:29 ping ring lies across a point about 48 miles west of the 18:22 position given by Malaysian radar (ten miles west of MEKAR.)
48nm at about 500kts for 6 and a half minutes puts the radar data and the sat data within one minute of being dead on.
So there is an anchoring time and place which couples with a Sat data position ring to the position shown by Malaysian radar ( 6°14'17.39"N 95°40'14.48"E at 18:28.)
From this anchor point , if we assume a groundspeed of about 500kts. A 104kt leg is needed to get to a point which provides a great circle course to all the predicted tracks on the southern leg. POVUS provides that point and a course to POVUS from there would skirt Indonesian airspace.
So both sat and radar data supports the fact that9MMRO was at POVUS at approximately 2:34 local time (18:34z.)
Further supporting this data is the correlating fact that the first BFO reading (88) which indicated a southerly heading came at 18:39:55.354, approximately four minutes after POVUS (this exchange was created by an attempted sat telephone call at 18:39:55.354.)
Now we have a piece of 9MMRO turning up at Reunion.
The "independent review" has taken place right here. All the facts line up.
You have no more argument against the known flight path.