[Code of Federal Regulations]
[Title 14, Volume 1]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR23.157]

[Page 189-190]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
 
PART 23--AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES--Table of Contents
 
                            Subpart B--Flight
 
Sec. 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:
    (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,

                              (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--
    (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 
VS1 or 1.1 VMC, or as nearly as possible in trim 
for straight flight.

[[Page 190]]

    (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:
    (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,

(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-
-
    (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.

[Amdt. 23-14, 38 FR 31819, Nov. 19, 1973, as amended by Amdt. 23-45, 58 
FR 42158, Aug. 6, 1993; Amdt. 23-50, 61 FR 5189, Feb. 9, 1996]

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