820
14 CFR Ch. I (1–1–24 Edition)
§ 171.25
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]
§ 171.25 Minimum requirements for ap-
proval.
(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 de-
termined by air and ground inspection,
must meet the requirements of § 171.27.
(2) The installation of the equipment
must meet the requirements of § 171.29.
(3) The owner must agree to operate
and maintain the facility in accord-
ance with § 171.31.
(4) The owner must agree to furnish
periodic reports, as set forth in § 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 sec-
tion and of any flight or ground inspec-
tions made before the facility is com-
missioned, except that the Federal
Aviation Administration may bear cer-
tain 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 commis-
sions the facility as a prerequisite to
its approval for use in an IFR proce-
dure. The approval is withdrawn at any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 sys-
tem service.
[Doc. No. 5034, 29 FR 11337, Aug. 6, 1964, as
amended by Amdt. 171–6, 35 FR 10288, June
24, 1970]
§ 171.27 Performance requirements.
(a) The facility must meet the per-
formance 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 ac-
cordance 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 engineer-
ing practices) that there will not be
conditions that will allow unsafe oper-
ations because of component failure or
deterioration.
(d) Flight tests to determine the fa-
cility’s adequacy for operational re-
quirements and compliance with appli-
cable ‘‘Standards and Recommended
Practices’’ are conducted in accord-
ance with the ‘‘U.S. Standard Flight
Inspection Manual’’, particularly sec-
tion 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]
§ 171.29 Installation requirements.
(a) The facility must be installed ac-
cording to accepted good engineering
practices, applicable electric and safe-
ty codes, and FCC licensing require-
ments.
(b) The facility must have a reliable
source of suitable primary power.
(c) Dual transmitting equipment may
be required to support some IFR proce-
dures.
(d) A facility intended for use as an
instrument approach aid for an airport
must have or be supplemented by (de-
pending on the circumstances) the fol-
lowing ground-air or landline commu-
nications services:
(1) At facilities outside of and not im-
mediately adjacent to controlled air-
space, there must be ground-air com-
munications from the airport served by
the facility. Voice on the aid con-
trolled from the airport is acceptable.