Yeah, they need wings and a tail too. And thats about it. As for turning, apparently its beyond doubt the pilot initiated the turn. How does that invalidate a fire theory? Apart from trying to fight the fire, turning back to an airport is the second most urgent thing to do. Many will say its the first thing to do.
The pilot making the first turn doesn't invalidate anything, its the additional turn(s) after that initial turn that make no sense to me.
My theory is that flight 370 never lost control at all. The crew was incapacitated, but the plane itself may have been fine after they stopped the electrical fire.
I dont know what path it followed exactly after the transponder was shut down. Does anyone? I think not. But if it did indeed fly a slightly erratic path, it would only serve as another argument in favor of incapacitated crew. A plane doesnt just fall from the sky when you release the controls, it will for the most part simply continue flying even without autpilot. Almost all pilot induced crashes are because the crew actively did something wrong, like slowing it down too much, steering in to the ground, or in to a mountain, or because they pulled too hard and stalled the plane, .. not because they didnt do anything at all. If only the pilots of Air France Flight 447 had done nothing, or simply released the controls at any point during their stall, instead of pulling the sticks non stop, it would have been fine.
Let's think about this for a second. Military radar blips happened after that initial turn, if you plot those points, I come to the conclusion that turns had to be made, not slightly erratic. Not to mention the sharp turn into the Indian Ocean that the people investigating are acting like happened. It sounds like your just acting like we need to ignore those because of the whole unrealiability factor of military radar? which I think is a little odd, but I will comply because I am not familiar with military radar.
Even IF you decide to throw out all of the military radar blips and only accept that the last known position was shortly after that first turn, I still cannot see evidence for a ghost flight to the crash area... a turn had to of happened somewhere and planes with an incapacitated crew shouldn't turn. It should be straight path with an incapacitated crew and the plane just gliding along, a straight path with a possible arch/curve, but no direct turns.
When looking at a map, find where the plane made its initial u-turn and then look at the potential crash site... do you believe a plane could have made it from that initial turn over to the indian ocean without a turn? Or are you implying a ghost flight can make turns and head in a different direction?
A plane cruising at altitude will just fly on without any input. If it starts to pitch down it will gain speed, gain lift and therefore automatically pitch up again. ANd due to the wing incidence if it starts rolling in one direction it will automagically slowly level itself again. Planes that lost all hydraulic power, leaving the pilot with no input (besides throttle), have flown on for hours many times, and the opposite, the plane crashing shorty after losing hydraulics in a cruise flight, has to my knowledge, never happened. In fact, at least one plane landed safely without any hydraulics, with the pilots only using differential throttle. A DHL flight over Iraq. That shows you dont need stick input to keep flying, aerodynamics take care of that. You only need stick input/autopilot to steer.
Alternatively if the plane flew straight and level all the way to the crash site, that doesnt invalidate the theory either, as its just as plausible the autopilot was not disabled by the fire or fuse pulling. The fire could have been found being caused by other circuitry like communications, or the fire may have disabled those but pilots restored power to the other circuitry. We have no way of knowing.
Do you believe it was possible for this plane to be heading north-west (or even just west) and being able to 'fly straight and level all the way to the crash site'? If you fly straight and level from the last point of contact, doesn't that put you approaching the Maldives before running out of gas?