824 

14 CFR Ch. I (1–1–24 Edition) 

§ 171.49 

§ 171.49 Installation requirements. 

(a) The facility must be of a perma-

nent nature, located, constructed, and 
installed according to ICAO Standards 
(Annex 10), 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, ei-
ther from a power distribution system 
or locally generated. A determination 
by the Administrator as to whether a 
facility will be required to have stand- 
by power for the localizer, glide slope 
and monitor accessories to supplement 
the primary power, will be made for 
each airport based upon operational 
minimums and density of air traffic. 

(c) A determination by the Adminis-

trator as to whether a facility will be 
required to have dual transmitting 
equipment with automatic changeover 
for localizer and glide slope compo-
nents, will be made for each airport 
based upon operational minimums and 
density of air traffic. 

(d) There must be a means for deter-

mining, from the ground, the perform- 
ance of the equipment (including an-
tennae), initially and periodically. 

(e) The facility must have, or be sup-

plemented by (depending on the cir-
cumstances) the following ground-air 
or landline communications 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. The utilization of voice on 
the ILS frequency should be deter-
mined by the facility operator on an 
individual basis. 

(2) At facilities within or imme-

diately adjacent to controlled airspace, 
there must be the ground-air commu-
nications required by paragraph (e)(1) 
of this section and reliable communica-
tions (at least a landline telephone) 
from the airport to the nearest FAA 
air traffic control or communications 
facility. 

Paragraphs (e)(1) and (e)(2) of this sec-
tion are not mandatory at airports 
where an adjacent FAA 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 fac-
tor, the requirements of paragraphs 
(e)(1) and (e)(2) of this section may be 
reduced to reliable communications (at 
least a landline telephone) from the 
airport to the nearest FAA air traffic 
control or communications facility, if 
an adjacent FAA facility can commu-
nicate with aircraft during the pro-
posed instrument approach procedure 
down to the airport surface or at least 
to the minimum approach altitude. 

[Doc. No. 5034, 29 FR 11337, Aug. 6, 1964, as 
amended by Amdt. 171–6, 35 FR 10288, June 
24, 1970; Amdt. 171–16, 56 FR 65664, Dec. 17, 
1991] 

§ 171.51 Maintenance and operations 

requirements. 

(a) The owner of the facility must es-

tablish an adequate maintenance sys-
tem and provide qualified maintenance 
personnel to maintain the facility at 
the level attained at the time it was 
commissioned. Each person who main-
tains a facility must meet at least the 
Federal Communications Commission’s 
licensing requirements and show that 
he has the special knowledge and skills 
needed to maintain the facility includ-
ing proficiency in maintenance proce-
dures and the use of specialized test 
equipment. 

(b) The owner must prepare, and ob-

tain approval of, an operations and 
maintenance manual that sets forth 
mandatory procedures for operations, 
preventive maintenance, and emer-
gency maintenance, including instruc-
tions on each of the following: 

(1) Physical security of the facility. 
(2) Maintenance and operations by 

authorized persons only. 

(3) FCC licensing requirements for 

operating and maintenance personnel. 

(4) Posting of licenses and signs. 
(5) Relation between the facility and 

FAA air traffic control facilities, with 
a description of the boundaries of con-
trolled airspace over or near the facil-
ity, instructions for relaying air traffic 
control instructions and information 
(if applicable), and instructions for the 
operations of an air traffic advisory 
service if the facility is located outside 
of controlled airspace. 

825 

Federal Aviation Administration, DOT 

§ 171.53 

(6) Notice to the Administrator of 

any suspension of service. 

(7) Detailed and specific maintenance 

procedures and servicing guides stating 
the frequency of servicing. 

(8) Air-ground communications, if 

provided, expressly written or incor-
porating appropriate sections of FAA 
manuals by reference. 

(9) Keeping of station logs and other 

technical reports, and the submission 
of reports required by § 171.53. 

(10) Monitoring of the facility. 
(11) Inspections by United States per-

sonnel. 

(12) Names, addresses, and telephone 

numbers of persons to be notified in an 
emergency. 

(13) Shutdowns for routine mainte-

nance and issue of ‘‘Notices to Airmen’’ 
for routine or emergency shutdowns 
(private use facilities may omit the 
‘‘Notices to Airmen’’). 

(14) Commissioning of the facility. 
(15) An acceptable procedure for 

amending or revising the manual. 

(16) An explanation of the kinds of 

activities (such as construction or 
grading) in the vicinity of the facility 
that may require shutdown or recertifi-
cation of the facility by FAA flight 
check. 

(17) Procedures for conducting a 

ground check or localizer course align-
ment width, and clearance, and glide 
slope elevation angle and width. 

(18) The following information con-

cerning the facility: 

(i) Facility component locations with 

respect to airport layout, instrument 
runway, and similar areas. 

(ii) The type, make, and model of the 

basic radio equipment that will provide 
the service. 

(iii) The station power emission and 

frequencies of the localizer, glide slope, 
markers, and associated compass loca-
tors, if any. 

(iv) The hours of operation. 
(v) Station identification call letters 

and method of station identification 
and the time spacing of the identifica-
tion. 

(vi) A description of the critical parts 

that may not be changed, adjusted, or 
repaired without an FAA flight check 
to confirm published operations. 

(c) The owner shall make a ground 

check of the facility each month in ac-

cordance with procedures approved by 
the FAA at the time of commissioning, 
and shall report the results of the 
checks as provided in § 171.53. 

(d) If the owner desires to modify the 

facility, he must submit the proposal 
to the FAA and may not allow any 
modifications to be made without spe-
cific approval. 

(e) ‘‘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.’’ 

(f) Whenever it is required by the 

FAA, the owner shall incorporate im-
provements in ILS maintenance 
brought about by progress in the state 
of the art. In addition, he shall provide 
a stock of spare parts, including vacu-
um tubes, of such a quantity to make 
possible the prompt replacement of 
components that fail or deteriorate in 
service. 

(g) The owner shall provide FAA ap-

proved test instruments needed for 
maintenance of the facility. 

(h) 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] 

§ 171.53 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-
tuning, to reflect an accurate record of 
facility operation and adjustment. 

(b) 

Facility maintenance log 

(

FormFAA 

6030–1

). This form is a permanent 

record of all equipment malfunctioning 
met in maintaining the facility, in-
cluding information on the kind of