1. Did the pilot from the Lion Air 610 crash deviate from what the manual prescribed?
No, they manually cranked the jet’s trim wheel to right the nose and flipped two cut-out switches.
2. What is a mistrim, and what is the consequence of a mistrim?
If the stabilizer is tilted too high, this is called a mistrim and can create a dangerous situation that can paralyze manual control.
3. What makes hand-cranking the trim wheel extremely difficult?
The elevator creates an opposing force against the jackscrew that swivels the stabilizer and makes hand-cranking the trim wheel to raise the nose extremely difficult.