Federal Aviation Administration, DOT

Section 171.7

of instrument flight rules and air traffic control procedures related to those
facilities.
[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]

Section 171.3

Requests for IFR procedure.

(a) Each person who requests an IFR
procedure based on a VOR facility that
he owns must submit the following information with that request:
(1) A description of the facility and
evidence that the equipment meets the
performance requirements of Section 171.7 and
is installed in accordance with Section 171.9.
(2) A proposed procedure for operating the facility.
(3) A proposed maintenance organization and maintenance manual that
meets the requirements of Section 171.11.
(4) A statement of intention to meet
the requirements of this subpart.
(5) A showing that the facility has an
acceptable level of operational reliability and an acceptable standard of
performance. Previous equivalent operational experience with a facility with
identical design and operational characteristics will be considered in showing compliance with this paragraph.
(b) After the FAA inspects and evaluates the facility, it advises the owner
of the results and of any required
changes in the facility or the maintenance manual or maintenance organization. The owner must then correct
the deficiencies, if any, and operate the
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 171.5 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 VOR:
(1) The facility-s performance, as determined by air and ground inspection,
must meet the requirements of Section 171.7.
(2) The installation of the equipment
must meet the requirements of Section 171.9.
(3) The owner must agree to operate
and maintain the facility in accordance with Section 171.11.

(4) The owner must agree to furnish
periodic reports, as set forth in Section 171.13,
and must 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.
[Doc. No. 5034, 29 FR 11337, Aug. 6, 1964, as
amended by Amdt. 171-6, 35 FR 10288, June
24, 1970]

Section 171.7

Performance requirements.

(a) The VOR must perform in accordance with the  - International Standards and Recommended Practices,
Aeronautical
Telecommunications, - 
Part I, paragraph 3.3 (Annex 10 to the
Convention on International Civil
Aviation), except that part of paragraph 3.3.2.1 specifying a radio frequency tolerance of 0.005 percent, and
that part of paragraph 3.3.7 requiring
removal of only the bearing information. In place thereof, the frequency
tolerance of the radio frequency carrier
must not exceed plus or minus 0.002
percent, and all radiation must be removed during the specified deviations
from established conditions and during
periods of monitor failure.
(b) Ground inspection consists of an
examination of the design features of
the equipment to determine that there
will not be conditions that will allow
unsafe operations because of component failure or deterioration.

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