[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: 14CFR25.115]

[Page 349]
 
                     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. 25.115  Takeoff flight path.

    (a) The takeoff flight path shall be considered to begin 35 feet 
above the takeoff surface at the end of the takeoff distance determined 
in accordance with Sec. 25.113(a) or (b), as appropriate for the runway 
surface condition.
    (b) The net takeoff flight path data must be determined so that they 
represent the actual takeoff flight paths (determined in accordance with 
Sec. 25.111 and with paragraph (a) of this section) reduced at each 
point by a gradient of climb equal to--
    (1) 0.8 percent for two-engine airplanes;
    (2) 0.9 percent for three-engine airplanes; and
    (3) 1.0 percent for four-engine airplanes.
    (c) The prescribed reduction in climb gradient may be applied as an 
equivalent reduction in acceleration along that part of the takeoff 
flight path at which the airplane is accelerated in level flight.

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-92, 
63 FR 8320, Feb. 18, 1998]