[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: 14CFR1.3]

[Page 17]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
 
PART 1--DEFINITIONS AND ABBREVIATIONS--Table of Contents
 
Sec. 1.3  Rules of construction.

    (a) In Subchapters A through K of this chapter, unless the context 
requires otherwise:
    (1) Words importing the singular include the plural;
    (2) Words importing the plural include the singular; and
    (3) Words importing the masculine gender include the feminine.
    (b) In Subchapters A through K of this chapter, the word:
    (1) Shall is used in an imperative sense;
    (2) May is used in a permissive sense to state authority or 
permission to do the act prescribed, and the words ``no person may * * 
*'' or ``a person may not * * *'' mean that no person is required, 
authorized, or permitted to do the act prescribed; and
    (3) Includes means ``includes but is not limited to''.

[Doc. No. 1150, 27 FR 4590, May 15, 1962, as amended by Amdt. 1-10, 31 
FR 5055, Mar. 29, 1966]

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