Just thinking about the last two regeneration's, and wondered why the tardis is suspended perfectly in flight, and then after the regeneration, suddenly start's to crash. It made me wonder whether because of it's connection with the doctor, it temporarily loses sense of him when he regenerates, almost thinking he's dead or something, so get's depressed and tries to crash itself. equally, since the doctor know's his brain is a bit scrabbled after regeneration, maybe it could even be suggested that he has taken the habit of going into flight before regeneration because he know's what the tardis will do, and he want's his new self to be under pressure so his mind clear's quicker (as that is what seemed to happen in the tennant to smith regeneration). Would also explain why he put the tardis into flight as smith, when he already knew what had happened when he had done the same as tennant.

That would appear to be a bit of a design flaw for a regenerating species.

The Doctor has said that many of the TARDIS's controls are at least partially psychic - it may be that the psychic feedback from the rapid change is overwhelming. Or that he keeps insisting on poking at controls at random when he's not recovered enough to know what he's doing?

yeah, that's what I mean, like the tardis dosen't recognise him

No idea for #11 to #12

but for #10 to #11 it might have something to do with the regeneration energy blowing up the TARDIS!

but as I said it happened the same both times, and second time he set it in flight prior to regeneration, despite knowing that the last time he did that it caused the tardis to crash, which is why it strike's me as possibly being intentional

It also happened from Eccleston's to Tennant's, remember they left Satellite 5 and the TARDIS was in flight, as they were going to go to the planet of Barcelona!
Then he regenerated and the TARDIS started to crash a few minuets later, Im not sure if it started crashing before or after he changed the course of the TARDIS, but they were then heading for Rose's estate where they crash landed!

Don't think that was the real reason - the Doctor knew fine well that he was about to regenerate.

Maybe the process is faster, or safer, when in the Time Vortex - or perhaps it's just for the privacy and security of not having things going on around him while he's in a vulnerable state.

I guess thats why the mettacrisis worked so well, as he was able to put the rest into the hand, meaning he was OK really fast!
That episode was on watch today too!

In the Children in Need short episode, everything is fine until the newly regenerated Doctor goes a bit mad and deliberately (possibly accidentally it's been a while since I've seen it) sets the TARDIS to crash.

You mean this:https://www.youtube.com/watch?v=_uzxb0TaOhw

yes..

yeah, didn't really think about it for the eccleston one, but the fact that it was in flight then too, definitely, to me at least, seem's to show that he's doing it on purpose, and I really do think that it could have something to do with him knowing it will start to crash and thinking that the adrenalin rush of the situation will clear his head quicker

Also The War Doctor went into flight too, but TBH he didnt know he was going to regenerate at that exact moment!
He might have actually got the idea then, as it wouldve been by accident that time!
Then all later times he realized that going into flight helps like you say!

I think it's just what the new writers have bought to the show to make the regeneration more "bayplosion" and exciting than the other regenerations (which never caused the TARDIS to cock up!)

I just view it as lazy writing and wearing a bit thin now IMO.

well in the 6 New Who Doctor regenerations ( McGann - Hurt, Hurt - Eccleston, Eccleston to Tennant, Tennant Mettacrisis, Tennant - Smith and Smith to Capaldi), we have only seen 3 do this.

McGann - Hurt was outside the TARDIS, the Mettacrisis was in the TARDIS but it wasnt flying under its own power at the time.
Regarding Hurt - Eccleston, we only saw it at the beginning, so we dont know if that caused him to crash that time.

whereas you think lazy writing, I see a theme emerging, and would be cool if it happened again next time, and say clara was still companion (doubtful, i know) and said something like why do you alway's do that when you regenerate, only for him to explain that it is completely intentional

I see what you did there.

Oh I missed that one! lol

Could it simply be that the Tardis needs flying and a pilot to watch the controls and when the regeneration happens, the Doctor (understandably) takes his eye off the ball causing the Tardis to go out of control?

OR...could simply be that the Tardis is taking him to where he needs to be by any means possible?

Until this thread, I'd never given the situation a moments thought! It could also be that special effects now make this doable whereas back in the old days, it would have been too expensive to have an explosive regeneration scene but had the means been there I'm sure it would have been equally dramatic.

but he put's it in flight in every one of his recent regeneration's knowing what has happened before. That's why it seem's to me like it's on purpose