'The final cruising of the MAS370 was FL350 and ADS-B was lost at 17h21z'
The
Malaysia Airlines Flight 370 - Wikipedia, the free encyclopedia Wiki page has MH370 reporting FL350 at 17:01 and again at 17:07.
According to the link from Flightaware, it was still climbing through 21,000 to 31,000 feet at these times.
So no, it doesn't make any sense presuming we are agreed that this is indeed data from the correct flight.
Is this just down to the more general inaccuracy of Flightaware's data? Or does it indicate inaccuracy on the part of the press releases?
ETA I think there is confusion over the correct date; FlightAware seems to use MYT for the date (8th March), and GMT for the times.
So this is the correct log:
http://uk.flightaware.com/live/fligh.../ZBAA/tracklog