I like this theory, although it is all a bit "James Bond"...
http://keithledgerwood.tumblr.com/post/79838944823/did-malaysian-airlines-370-disappear-using-sia68-sq68
It was a broken link. Try this: https://plus.google.com/106271056358366282907/posts/GoeVjHJaGBz
But, in short, something like a fire happened on the plane, the pilot had turned towards the nearest and most accessible airport to where they were but they probably ran out of oxygen and passed out...
The latest NY Times piece is interesting, including thoughts that the plane went to 45,000 feet, which is higher than it is intended it should fly...
http://www.nytimes.com/2014/03/15/world/asia/malaysia-military-radar.html?hp&_r=0
I think it's been quite widely reported that it had enough fuel for 4-5 hours more flying at normal cruising altitudes. If it flew lower, range would be decreased due to 'thicker' air.
ABC News’ Martha Raddatz is known for having well-cultivated sources inside the defense department. Earlier today she quoted an unnamed “senior Pentagon official” as saying the USS Kidd, a destroyer, was moving to the Indian Ocean to search for MH370.
Raddatz’s report makes clear that the...
The US are moving one of their ships to the Indian Ocean with mention of intelligence that the plane flew for 4-5 hours before going down in the sea there.
Hussein opened the press conference by denying reports that the missing plane sent out engine data after it disappeared from contact with air traffic control. He said:
I would like to refer to news reports suggesting that the aircraft may have been flying for some time after the last contact...
I understand the beacons only have limited range, particularly when under water. They also stop broadcasting after 30 days so you have to find it by sight alone. The Air France was 2000m below the surface of the sea from what i recall. (It might even have been 4000m)
I am fascinated by this news story.
Other than Dennis Bergkamp, most of us travel by air from time to time, and the thought of a large well-populated commercial jet disappearing mid-flight for days on end is quite astounding.
Radar operates on line of sight. The curvature of the Earth is such that radar does not cover big expanses of ocean.
The planes have GPS, of course, but that tells the plane (and crew) where it is - that location is not broadcast back to anywhere during the flight.