[Code of Federal Regulations]
[Title 14, Volume 1]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR23.33]

[Page 186]
 
                     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.  23.33  Propeller speed and pitch limits.

    (a) General. The propeller speed and pitch must be limited to values 
that will assure safe operation under normal operating conditions.
    (b) Propellers not controllable in flight. For each propeller whose 
pitch cannot be controlled in flight--
    (1) During takeoff and initial climb at the all engine(s) operating 
climb speed specified in Sec.  23.65, the propeller must limit the 
engine r.p.m., at full throttle or at maximum allowable takeoff manifold 
pressure, to a speed not greater than the maximum allowable takeoff 
r.p.m.; and
    (2) During a closed throttle glide, at VNE, the propeller may not 
cause an engine speed above 110 percent of maximum continuous speed.
    (c) Controllable pitch propellers without constant speed controls. 
Each propeller that can be controlled in flight, but that does not have 
constant speed controls, must have a means to limit the pitch range so 
that--
    (1) The lowest possible pitch allows compliance with paragraph 
(b)(1) of this section; and
    (2) The highest possible pitch allows compliance with paragraph 
(b)(2) of this section.
    (d) Controllable pitch propellers with constant speed controls. Each 
controllable pitch propeller with constant speed controls must have--
    (1) With the governor in operation, a means at the governor to limit 
the maximum engine speed to the maximum allowable takeoff r.p.m.; and
    (2) With the governor inoperative, the propeller blades at the 
lowest possible pitch, with takeoff power, the airplane stationary, and 
no wind, either--
    (i) A means to limit the maximum engine speed to 103 percent of the 
maximum allowable takeoff r.p.m., or
    (ii) For an engine with an approved overspeed, a means to limit the 
maximum engine and propeller speed to not more than the maximum approved 
overspeed.

[Doc. No. 4080, 29 FR 17955, Dec. 18, 1964, as amended by Amdt. 23-45, 
58 FR 42156, Aug. 6, 1993; Amdt. 23-50, 61 FR 5183, Feb. 9, 1996]

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