Originally Posted by
Stevedd32
As a retired private pilot I am amazed having read pretty much all of this thread but found no reference to what is to me the most likely cause of this crash. Hundreds of single engine pilots over the years have died attempting to do a circuit to land after an EFATO. However many thousands of hours they might have, some are obviously not aware of the fact that IF YOU ATTEMPT A STEEP TURN WHEN FLYING LOW AND SLOW YOU ARE DEAD MEAT!
They assume (presumably due to lack of training) that they only need to apply opposite aileron to level the wings! This is intuitive but fatal. They do not realise that in this situation the drag caused by opposite aileron merely stalls the inside wing promoting a spin.
Google Fairchild B52 crash for a perfect example. You can see the pilot applying opposite aileron (spoilers) as the plane, at 90deg bank spins into the ground.
The key question with regard to the Yeti disaster is, did either the PF or the captain have recent training on incipient spins? Either on a simulator or an aircraft?
All of this assuming of course that there was no defect on the aircraft.
The B52 is another matter entirely. models prior to the G has tiny "feelerons...." Roll control is by spoiler, and given the design of the wing that should be obvious as to why. You will note a similar issue with the braced wing greenie plane that Boeing has been recently funded by NASA to look at (again.... again... again). The Fairchild AFB bingle shows the fundamental problem of having a design that was not expected to be doing aerobatics being flown by a clown looking for a big top and an audience. The Buff has a very small chord rudder, and placing a highly swept wing into an unloaded high bank angle is going to get entertaining promptly. The plane will rapidly get an uncommanded increasing bank angle due to yaw and that exceeds the control authority. The only things they had left were asymmetric thrust and increasing g load to increase the roll moment of the spoiler, along with max top rudder. The ego exceeded competency well before sign on for that mission, and at least one good guy died trying to mitigate the risk of a command structure that was disinterested in managing risk. Had they bothered to pass their intended dynamics past anyone with a passing competency in aerodynamics, perhaps they might of not had the photo op.
steep turns by themselves are just another free force diagram solution.... but stupidity and ignorance at low altitude has consequences.