§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� banked turn through an angle of 60�, so as to reverse the direction of the turn within-- (1) For an airplane of 6,000 pounds or less maximum weight, 5 seconds from initiation of roll; and (2) For an airplane of over 6,000 pounds maximum weight, 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-- (1) Flaps in the takeoff position; (2) Landing gear retracted; (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 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� banked turn through an angle of 60�, so as to reverse the direction of the turn within: (1) For an airplane of 6,000 pounds or less maximum weight, 4 seconds from initiation of roll; and (2) For an airplane of over 6,000 pounds maximum weight, 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-- (1) Flaps in the landing position(s); (2) Landing gear extended; (3) All engines operating at the power for a 3 degree approach; and (4) The airplane trimmed at VREF.]