[Code of Federal Regulations]
[Title 24, Volume 1]
[Revised as of April 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 24CFR51.301]

[Page 391]
 
                 TITLE 24--HOUSING AND URBAN DEVELOPMENT
 
PART 51_ENVIRONMENTAL CRITERIA AND STANDARDS--Table of Contents
 
Subpart D_Siting of HUD Assisted Projects in Runway Clear Zones at Civil 
   Airports and Clear Zones and Accident Potential Zones at Military 
                                Airfields
 
Sec. 51.301  Definitions.

    For the purposes of this regulation, the following definitions 
apply:
    (a) Accident Potential Zone. An area at military airfields which is 
beyond the Clear Zone. The standards for the Accident Potential Zones 
are set out in Department of Defense Instruction 4165.57, ``Air 
Installations Compatible Use Zones,'' November 8, 1977, 32 CFR part 256. 
There are no Accident Potential Zones at civil airports.
    (b) Airport Operator. The civilian or military agency, group or 
individual which exercises control over the operations of the civil 
airport or military airfield.
    (c) Civil Airport. An existing commercial service airport as 
designated in the National Plan of Integrated Airport Systems prepared 
by the Federal Aviation Administration in accordance with section 504 of 
the Airport and Airway Improvement Act of 1982.
    (d) Runway Clear Zones and Clear Zones. Areas immediately beyond the 
ends of a runway. The standards for Runway Clear Zones for civil 
airports are established by FAA regulation 14 CFR part 152. The 
standards for Clear Zones for military airfields are established by DOD 
Instruction 4165.57, 32 CFR part 256.