[Code of Federal Regulations]

[Title 14, Volume 3]

[Revised as of January 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 14CFR171.21]



[Page 219]

 

                     TITLE 14--AERONAUTICS AND SPACE

 

CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 

                               (CONTINUED)

 

PART 171_NON-FEDERAL NAVIGATION FACILITIES--Table of Contents

 

            Subpart B_Nondirectional Radio Beacon Facilities

 

Sec. 171.21  Scope.





    (a) This subpart sets forth minimum requirements for the approval 

and operation of non-Federal, nondirectional radio beacon facilities 

that are to be involved in the approval of instrument flight rules and 

air traffic control procedures related to those facilities.

    (b) A nondirectional radio beacon (``H'' facilities domestically--

NDB facilities internationally) radiates a continuous carrier of 

approximately equal intensity at all azimuths. The carrier is modulated 

at 1020 cycles per second for station identification purposes.



[Doc. No. 5034, 29 FR 11337, Aug. 6, 1964, as amended by Amdt. 171-2, 31 

FR 5408, Apr. 6, 1966; Amdt. 171-7, 35 FR 12711, Aug. 11, 1970]