[Code of Federal Regulations]
[Title 14, Volume 1]
[Revised as of January 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR25.105]

[Page 344]
 
                     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. 25.105  Takeoff.

    (a) The takeoff speeds described in Sec. 25.107, the accelerate-stop 
distance described in Sec. 25.109, the takeoff path described in 
Sec. 25.111, and the takeoff distance and takeoff run described in 
Sec. 25.113, must be determined--
    (1) At each weight, altitude, and ambient temperature within the 
operational limits selected by the applicant; and
    (2) In the selected configuration for takeoff.
    (b) No takeoff made to determine the data required by this section 
may require exceptional piloting skill or alertness.
    (c) The takeoff data must be based on--
    (1) In the case of land planes and amphibians:
    (i) Smooth, dry and wet, hard-surfaced runways; and
    (ii) At the option of the applicant, grooved or porous friction 
course wet, hard-surfaced runways.
    (2) Smooth water, in the case of seaplanes and amphibians; and
    (3) Smooth, dry snow, in the case of skiplanes.
    (d) The takeoff data must include, within the established 
operational limits of the airplane, the following operational correction 
factors:
    (1) Not more than 50 percent of nominal wind components along the 
takeoff path opposite to the direction of takeoff, and not less than 150 
percent of nominal wind components along the takeoff path in the 
direction of takeoff.
    (2) Effective runway gradients.

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-92, 
63 FR 8318, Feb. 18, 1998]