[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: 14CFR35.21]

[Page 811-812]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
 
PART 35_AIRWORTHINESS STANDARDS: PROPELLERS--Table of Contents
 
                    Subpart B_Design and Construction
 
Sec.  35.21  Reversible propellers.

    A reversible propeller must be adaptable for use with a reversing 
system in an airplane so that no single failure or malfunction in that 
system during normal or emergency operation will result in unwanted 
travel of the propeller blades to a position substantially below the 
normal flight low-pitch stop. Failure of structural elements need not be 
considered if the occurrence of such a failure is expected to be 
extremely

[[Page 812]]

remote. For the purposes of this section the term ``reversing system'' 
means that part of the complete reversing system that is in the 
propeller itself and those other parts that are supplied by the 
applicant for installation in the aircraft.