Thank you, John Farley, for your comments ref the HP115.
Just a little correction to your post regarding lift margins, if I be so bold?
You note that lift was abundant since the a/c shot up to 800' during the departure. That seems extremely unlikely to me - the total kinetic and thrust energy just isn't there to overcome the exponentially increasing drag by that stage, certainly during windshear recoveries on the conc there is as much if not more milking of the total energy required as a conventional widebody, and this on four engines at contingency thrust and at alpha's of 16-18.
I suspect what you have looked at is the rad alt indications caused by the increasing bank angle.