From our books and checklists I have always found the isolation valve switches a bit counter intuitive. "Isolation valve switch.....ON" sounds like you are isolating something, but in fact you do the opposite. To me, a valve is either open, closed or automatic.
Originally Posted by
HPSOV L
“Airspeed cannot be trimmed to the desired pitch attitude:”
Select option: Yes / No
I have always considered these statements as
true/false.
However, I find the Boeing checklists to be mostly simple to follow. This is also a thing I hear from pilots transitioning from Airbus.