[Code of Federal Regulations]
[Title 14, Volume 2]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR73.3]

[Page 480-481]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 
                               (CONTINUED)
 
PART 73_SPECIAL USE AIRSPACE--Table of Contents
 
                            Subpart A_General
 
Sec.  73.3  Special use airspace.

    (a) Special use airspace consists of airspace of defined dimensions 
identified by an area on the surface of the earth wherein activities 
must be confined because of their nature, or wherein limitations are 
imposed upon aircraft operations that are not a part of those 
activities, or both.
    (b) The vertical limits of special use airspace are measured by 
designated altitude floors and ceilings expressed as flight levels or as 
feet above mean sea level. Unless otherwise specified, the word ``to'' 
(an altitude or flight level) means ``to and including'' (that altitude 
or flight level).
    (c) The horizontal limits of special use airspace are measured by 
boundaries described by geographic coordinates or other appropriate 
references that clearly define their perimeter.

[[Page 481]]

    (d) The period of time during which a designation of special use 
airspace is in effect is stated in the designation.