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819 

Federal Aviation Administration, DOT 

§ 171.23 

§ 171.13 Reports. 

The owner of each facility to which 

this subpart applies shall make the fol-
lowing reports on forms furnished by 
the FAA, 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 with the equipment ad-
justments 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 

6003–1

). 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. 

(d) [Reserved] 
(e) 

VOR ground check error data 

(

Forms FAA–2396 and 2397

). To contain 

results of the monthly course accuracy 
ground check in accordance with FAA 
Handbook AF P 6790.9 ‘‘Maintenance 
Instructions for VHF Omniranges’’. 
The owner shall keep the originals in 
the facility and send a copy of each 
form to the appropriate Regional office 
of the FAA on a monthly basis. 

(49 U.S.C. 1348) 

[Doc. No. 5034, 29 FR 11337, Aug. 6, 1964, as 
amended by Amdt. 171–5, 34 FR 15245, Sept. 
30, 1969; Amdt. 171–10, 40 FR 36110, Aug. 19, 
1975] 

Subpart B—Nondirectional Radio 

Beacon Facilities 

§ 171.21 Scope. 

(a) This subpart sets forth minimum 

requirements for the approval and op-
eration of non-Federal, nondirectional 
radio beacon facilities that are to be 
involved in the approval of instrument 
flight rules and air traffic control pro-
cedures related to those facilities. 

(b) A nondirectional radio beacon 

(‘‘H’’ facilities domestically—NDB fa-
cilities internationally) radiates a con-
tinuous carrier of approximately equal 
intensity at all azimuths. The carrier 
is modulated at 1020 cycles per second 
for station identification purposes. 

[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] 

§ 171.23 Requests for IFR procedure. 

(a) Each person who requests an IFR 

procedure based on a nondirectional 
radio beacon 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 § 171.27 
and is installed in accordance with 
§ 171.29. 

(2) A proposed procedure for oper-

ating the facility. 

(3) A proposed maintenance arrange-

ment and a maintenance manual that 
meets the requirements of § 171.31. 

(4) A statement of intention 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 

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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.