822
14 CFR Ch. I (1–1–24 Edition)
§ 171.33
voice announcement, and the time
spacing of the identification.
(c) If the owner desires to modify the
facility, he must submit the proposal
to the FAA and meet applicable re-
quirements of the FCC.
(d) The owner’s maintenance per-
sonnel must participate in initial in-
spections made by the FAA. In the case
of subsequent inspections, the owner or
his representative shall participate.
(e) The owner shall provide a stock of
spare parts, including vacuum tubes, of
such a quantity to make possible the
prompt replacement of components
that fail or deteriorate in service.
(f) The owner shall close the facility
upon receiving two successive pilot re-
ports of its malfunctioning.
[Doc. No. 5034, 29 FR 11337, Aug. 6, 1964, as
amended by Amdt. 171–2, 31 FR 5408, Apr. 6,
1966]
§ 171.33 Reports.
The owner of each facility to which
this subpart applies shall make the fol-
lowing reports, at the times indicated,
to the FAA Regional office for the area
in which the facility is located:
(a)
Record of meter readings and adjust-
ments
(
Form FAA–198
). To be filled out
by the owner or his maintenance rep-
resentative with the equipment adjust-
ments and meter readings as of the
time of commissioning, with one copy
to be kept in the permanent records of
the facility and two copies to the ap-
propriate Regional Office of the FAA.
The owner shall revise the form after
any major repair, modernization, or re-
turning, to reflect an accurate record
of facility operation and adjustment.
(b)
Facility maintenance log
(
FAA Form
6030–1
). This form is a permanent
record of all equipment malfunctioning
met in maintaining the facility, in-
cluding information on the kind of
work and adjustments made, equip-
ment failures, causes (if determined),
and corrective action taken. The owner
shall keep the original of each report
at the facility and send a copy to the
appropriate Regional Office of the FAA
at the end of the month in which it is
prepared.
(c)
Radio equipment operation record
(
Form FAA–418
). To contain a complete
record of meter readings, recorded on
each scheduled visit to the facility.
The owner shall keep the original of
each month’s record at the facility and
send a copy of it to the appropriate Re-
gional Office of the FAA.
[Doc. No. 5034, 29 FR 11337, Aug. 6, 1964, as
amended by Amdt. 171–10, 40 FR 36110, Aug.
19, 1975]
Subpart C—Instrument Landing
System (ILS) Facilities
§ 171.41 Scope.
This subpart sets forth minimum re-
quirements for the approval and oper-
ation of non-Federal Instrument Land-
ing System (ILS) Facilities that are to
be involved in the approval of instru-
ment 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]
§ 171.43 Requests for IFR procedure.
(a) Each person who requests an IFR
procedure based on an ILS facility that
he owns must submit the following in-
formation with that request:
(1) A description of the facility and
evidence that the equipment meets the
performance requirements of § 171.47
and is installed in accordance with
§ 171.49.
(2) A proposed procedure for oper-
ating the facility.
(3) A proposed maintenance organiza-
tion and a maintenance manual that
meets the requirements of § 171.51.
(4) A statement of intent to meet the
requirements of this subpart.
(5) A showing that the facility has an
acceptable level of operational reli-
ability and an acceptable standard of
performance. Previous equivalent oper-
ational experience with a facility with
identical design and operational char-
acteristics will be considered in show-
ing compliance with this subparagraph.
(b) After the FAA inspects and evalu-
ates the facility, it advises the owner
of the results and of any required
changes in the facility or the mainte-
nance manual or maintenance organi-
zation. The owner must then correct
the deficiencies, if any, and operate the
823
Federal Aviation Administration, DOT
§ 171.47
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]
§ 171.45 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 Instrument Landing
System:
(1) The facility’s performance, as de-
termined by air and ground inspection,
must meet the requirements of § 171.47.
(2) The installation of the equipment
must meet the requirements of § 171.49.
(3) The owner must agree to operate
and maintain the facility in accord-
ance with § 171.51.
(4) The owner must agree to furnish
periodic reports, as set forth in § 171.53
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]
§ 171.47 Performance requirements.
(a) The Instrument Landing System
must perform in accordance with the
‘‘International Standards and Rec-
ommended Practices, Aeronautical
Telecommunications, Part I, Para-
graph 3.1’’ (Annex 10 to the Convention
on International Civil Aviation) except
as follows:
(1) The first part of paragraph 3.1.3,
relating to suppression of radiation
wholly or in part in any or all direc-
tions outside the 20-degree sector cen-
tered on the course line to reduce lo-
calizer does not apply.
(2) Radiation patterns must conform
to limits specified in 3.1.3.3 and 3.1.3.4,
but this does not mean that suppres-
sion of radiation to the rear of the an-
tenna array to satisfy difficult siting
positions (as per 3.1.3.1.4) is not al-
lowed. For example, if a reflector
screen for the antenna array is re-
quired to overcome a siting problem,
the area to the rear of the localizer
may be made unusable and should be so
advertised.
(3) A third marker beacon (inner
marker) is not required.
(4) The frequency tolerance of the
radio frequency carrier must not ex-
ceed plus or minus 0.002 percent.
(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 compo-
nent failure or deterioration.
(c) The monitor is checked periodi-
cally, during the in-service test evalua-
tion period, for calibration and sta-
bility. These tests, and ground checks
of glide slope and localizer radiation
characteristics, are conducted in ac-
cordance with FAA Handbooks AF P
6750.1 and AF P 6750.2 ‘‘Maintenance In-
structions for ILS Localizer Equip-
ment’’ and ‘‘Maintenance Instructions
for ILS Glide Slope Equipment’’.
(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 217.
[Doc. No. 5034, 29 FR 11337, Aug. 6, 1974, as
amended by Amdt. 171–9, 38 FR 28557, Oct. 15,
1973]