Arthur
I think we will have to disagree over the relative sizes of the two helicopters. However...
If you could share with us the basis upon which you wish to discount the evidence (likely or otherwise?) of the last known witness to
see ZD576, perhaps we may be able to progress any theory that may follow?
Perhaps you have other witnesses to the speed of the aircraft, or recordings?
Could the a/c have increased speed shortly before impact? I accept it's possible.
Just show me the evidence that
proves it didn't.
Edited to add:
the alleged change in speed of the Chinook
If a witness sees the aircraft at a speed that he assesses as 70kts, and it then impacts a hillside 60secs or so later at high speed, that's not an 'allegation', it is simply a statement of best evidence?