[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: 14CFR25.33]

[Page 342]
 
                     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. 25.33  Propeller speed and pitch limits.

    (a) The propeller speed and pitch must be limited to values that 
will ensure-
    (1) Safe operation under normal operating conditions; and
    (2) Compliance with the performance requirements of Secs. 25.101 
through 25.125.
    (b) There must be a propeller speed limiting means at the governor. 
It must limit the maximum possible governed engine speed to a value not 
exceeding the maximum allowable r.p.m.
    (c) The means used to limit the low pitch position of the propeller 
blades must be set so that the engine does not exceed 103 percent of the 
maximum allowable engine rpm or 99 percent of an approved maximum 
overspeed, whichever is greater, with--
    (1) The propeller blades at the low pitch limit and governor 
inoperative;
    (2) The airplane stationary under standard atmospheric conditions 
with no wind; and
    (3) The engines operating at the takeoff manifold pressure limit for 
reciprocating engine powered airplanes or the maximum takeoff torque 
limit for turbopropeller engine-powered airplanes.

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-57, 
49 FR 6848, Feb. 23, 1984; Amdt. 25-72, 55 FR 29774, July 20, 1990]

                               Performance