[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: 14CFR171.159]



[Page 235]

 

                     TITLE 14--AERONAUTICS AND SPACE

 

CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 

                               (CONTINUED)

 

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

 

              Subpart G_Distance Measuring Equipment (DME)

 

Sec. 171.159  Installation requirements.



    (a) The facility must be installed according to accepted good 

engineering practices, applicable electric and safety codes, and Federal 

Communications Commission requirements.

    (b) The facility must have a reliable source of suitable primary 

power, either from a power distribution system or locally generated, 

with a supplemental standby system, if needed.

    (c) Dual transmitting equipment with automatic changeover is 

preferred and may be required to support certain IFR procedures.

    (d) There must be a means for determining from the ground, the 

performance of the equipment, initially and periodically.

    (e) A facility intended for use as an instrument approach aid for an 

airport must have or be supplemented by the following ground air or 

landline communications services:

    (1) At facilities outside of and not immediately adjacent to 

controlled airspace, there must be ground-air communications from the 

airport served by the facility. Separate communications channels are 

acceptable.

    (2) At facilities within or immediately adjacent to controlled 

airspace, there must be the ground-air communications required by 

paragraph (e)(1) of this section and reliable communications (at least a 

landline telephone) from the airport to the nearest Federal Aviation 

Administration air traffic control or communications facility. Separate 

communications channels are acceptable.



Compliance with paragraphs (e) (1) and (2) of this section need not be 

shown at airports where an adjacent Federal Aviation Administration 

facility can communicate with aircraft on the ground at the airport and 

during the entire proposed instrument approach procedure. In addition, 

at low traffic density airports within or immediately adjacent to 

controlled airspace, and where extensive delays are not a factor, the 

requirements of paragraphs (e) (1) and (2) of this section may be 

reduced to reliable communications (at least a landline telephone) from 

the airport to the nearest Federal Aviation Administration air traffic 

control or communications facility, if an adjacent Federal Aviation 

Administration facility can communicate with aircraft during the 

proposed instrument approach procedure, at least down to the minimum en 

route altitude for the controlled airspace area.



[Doc. No. 10116, 35 FR 12715, Aug. 11, 1970, as amended by Amdt. 171-16, 

56 FR 65665, Dec. 17, 1991]



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