Federal Aviation Administration, DOT

Section 171.29

facility for an in-service evaluation by
the FAA.
[Doc. No. 5034, 29 FR 11337, Aug. 6, 1964, as
amended by Amdt. 171-7, 35 FR 12711, Aug. 11,
1970]

Section 171.25 Minimum requirements for approval.
(a) The following are the minimum
requirements that must be met before
the FAA will approve an IFR procedure
for a non-Federal, nondirectional radio
beacon facility under this subpart:
(1) The facility-s performances, as determined by air and ground inspection,
must meet the requirements of Section 171.27.
(2) The installation of the equipment
must meet the requirements of Section 171.29.
(3) The owner must agree to operate
and maintain the facility in accordance with Section 171.31.
(4) The owner must agree to furnish
periodic reports, as set forth in Section 171.33,
and agree to allow the FAA to inspect
the facility and its operation whenever
necessary.
(5) The owner must assure the FAA
that he will not withdraw the facility
from service without the permission of
the FAA.
(6) The owner must bear all costs of
meeting the requirements of this section and of any flight or ground inspections made before the facility is commissioned, except that the Federal
Aviation Administration may bear certain of these costs subject to budgetary
limitations and policy established by
the Administrator.
(b) If the applicant for approval
meets the requirements of paragraph
(a) of this section, the FAA commissions the facility as a prerequisite to
its approval for use in an IFR procedure. The approval is withdrawn at any
time the facility does not continue to
meet those requirements. In addition,
the facility may be de-commissioned
whenever the frequency channel is
needed for higher priority common system service.
[Doc. No. 5034, 29 FR 11337, Aug. 6, 1964, as
amended by Amdt. 171-6, 35 FR 10288, June
24, 1970]

Section 171.27 Performance requirements.
(a) The facility must meet the performance requirements set forth in the
 - International Standards and Rec-

ommended
Practices,
Aeronautical
Telecommunications, Part I, paragraph
3.4 -  (Annex 10 to the Convention on
International Civil Aviation), except
that identification by on-off keying of
a second carrier frequency, separated
from the main carrier by 1020 Hz plus
or minus 50 Hz, is also acceptable.
(b) The facility must perform in accordance with recognized and accepted
good electronic engineering practices
for the desired service.
(c) Ground inspection consists of an
examination of the design features of
the equipment to determine (based on
recognized and accepted good engineering practices) that there will not be
conditions that will allow unsafe operations because of component failure or
deterioration.
(d) Flight tests to determine the facility-s adequacy for operational requirements and compliance with applicable  - Standards and Recommended
Practices -  are conducted in accordance with the  - U.S. Standard Flight
Inspection Manual - , particularly section 207. The original test is made by
the FAA and later tests shall be made
under arrangements, satisfactory to
the FAA, that are made by the owner.
[Doc. No. 5034, 29 FR 11337, Aug. 6, 1964, as
amended by Amdt. 171-7, 35 FR 12711, Aug. 11,
1970]

Section 171.29

Installation requirements.

(a) The facility must be installed according to accepted good engineering
practices, applicable electric and safety codes, and FCC licensing requirements.
(b) The facility must have a reliable
source of suitable primary power.
(c) Dual transmitting equipment may
be required to support some IFR procedures.
(d) A facility intended for use as an
instrument approach aid for an airport
must have or be supplemented by (depending on the circumstances) 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. Voice on the aid controlled from the airport is acceptable.

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