[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: 14CFR25.233]

[Page 360]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
 
PART 25--AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES--Table of Contents
 
                            Subpart B--Flight
 
Sec. 25.233  Directional stability and control.

    (a) There may be no uncontrollable ground-looping tendency in 
90 deg. cross winds, up to a wind velocity of 20 knots or 0.2 
VSR0, whichever is greater, except that the wind 
velocity need not exceed 25 knots at any speed at which the airplane may 
be expected to be operated on the ground. This may be shown while 
establishing the 90 deg. cross component of wind velocity required by 
Sec. 25.237.
    (b) Landplanes must be satisfactorily controllable, without 
exceptional piloting skill or alertness, in power-off landings at normal 
landing speed, without using brakes or engine power to maintain a 
straight path. This may be shown during power-off landings made in 
conjunction with other tests.
    (c) The airplane must have adequate directional control during 
taxiing. This may be shown during taxiing prior to takeoffs made in 
conjunction with other tests.

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-23, 
35 FR 5671, Apr. 8, 1970; Amdt. 25-42, 43 FR 2322, Jan. 16, 1978; Amdt. 
25-94, 63 FR 8848, Feb. 23, 1998; Amdt. 25-108, 67 FR 70828, Nov. 26, 
2002]