I've just had a quick flick thru, but my take on the major issues the lead them into the trap (besides the culture of not doing itin the sim) are:
Checkie pulls per lever too far back, disabling autofeather and increasing actual min control speed. 25.149 from memory talks about vmc being certified with auto feather.
Checkee pull nose up too high. Speed loss. Puts in correct rudder, but not enough due to more adverse yawing than normal Puts aileron the correct way, but not enough and fails to stop increasing bank the wrong way (coming from the aforementioned yaw), further increasing actual min control speed
Aircraft gets towards the actual min control speed quickly which is now much higher than the normal 97 given the above (and this possibly caught the checkie out) and it's all over.
May we all learn from this.
RIP.
Last edited by compressor stall; 23rd Feb 2012 at 18:57.
Reason: Clarification