Dont know...but
on the early Citation 3, the instruction was to leave first stage flap down, when on the ground.
Due to the (regular) failure of the flap motor and its sync sensor...(I think).
1st stage flap, was then possible for take off, and flight, and landing.
Perhaps zero flap not approved for TO.??????
Not flown a C3 for many years, but we did have TWO failures of sync.
windy