23.157—Rate of roll.
(a) Takeoff.
It must be possible, using a favorable combination of controls, to roll the airplane from a steady 30-degree banked turn through an angle of 60 degrees, so as to reverse the direction of the turn within:
(W 500)/1,300
seconds, but not more than 10 seconds, where W is the weight in pounds.
(b)
The requirement of paragraph (a) of this section must be met when rolling the airplane in each direction with—
(3)
For a single-engine airplane, at maximum takeoff power; and for a multiengine airplane with the critical engine inoperative and the propeller in the minimum drag position, and the other engines at maximum takeoff power; and
(4)
The airplane trimmed at a speed equal to the greater of 1.2 VS1 or 1.1 VMC, or as nearly as possible in trim for straight flight.
(c) Approach.
It must be possible, using a favorable combination of controls, to roll the airplane from a steady 30-degree banked turn through an angle of 60 degrees, so as to reverse the direction of the turn within:
(W 2,800)/2,200
seconds, but not more than 7 seconds, where W is the weight in pounds.
(d)
The requirement of paragraph (c) of this section must be met when rolling the airplane in each direction in the following conditions—