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862 

14 CFR Ch. I (1–1–24 Edition) 

Pt. 45 

that include the optional high RF peak out-
put power, verify that the minimum RF peak 
output power is at least 21.0 dbw (125 watts). 

(iv) For Classes 1B, 2B, and 3B Mode S 

transponders, verify that the minimum RF 
peak output power is at least 18.5 dbw (70 
watts). 

(v) For any class of ATCRBS or any class 

of Mode S transponders, verify that the max-
imum RF peak output power does not exceed 
27.0 dbw (500 watts). 

N

OTE

: The tests in (e) through (j) apply 

only to Mode S transponders. 

(e) Mode S Diversity Transmission Channel 

Isolation: For any class of Mode S trans-
ponder that incorporates diversity operation, 
verify that the RF peak output power trans-
mitted from the selected antenna exceeds 
the power transmitted from the nonselected 
antenna by at least 20 db. 

(f) Mode S Address: Interrogate the Mode S 

transponder and verify that it replies only to 
its assigned address. Use the correct address 
and at least two incorrect addresses. The in-
terrogations should be made at a nominal 
rate of 50 interrogations per second. 

(g) Mode S Formats: Interrogate the Mode 

S transponder with uplink formats (UF) for 
which it is equipped and verify that the re-
plies are made in the correct format. Use the 
surveillance formats UF = 4 and 5. Verify 
that the altitude reported in the replies to 
UF = 4 are the same as that reported in a 
valid ATCRBS Mode C reply. Verify that the 
identity reported in the replies to UF = 5 are 
the same as that reported in a valid ATCRBS 
Mode 3/A reply. If the transponder is so 
equipped, use the communication formats 
UF = 20, 21, and 24. 

(h) Mode S All-Call Interrogations: Inter-

rogate the Mode S transponder with the 
Mode S-only all-call format UF = 11 and 
verify that the correct address and capa-
bility are reported in the replies (downlink 
format DF = 11). 

(i) ATCRBS-Only All-Call Interrogation: 

Interrogate the Mode S transponder with the 
ATCRBS-only all-call interrogation (0.8 
microsecond P

4

pulse) and verify that no 

reply is generated. 

(j) Squitter: Verify that the Mode S trans-

ponder generates a correct acquisition 
squitter approximately once per second. 

(k) Records: Comply with the provisions of 

§ 43.9 of this chapter as to content, form, and 
disposition of the records. 

[Amdt. 43–26, 52 FR 3390, Feb. 3, 1987; 52 FR 
6651, Mar. 4, 1987, as amended by Amdt. 43–31, 
54 FR 34330, Aug. 18, 1989; Amdt. 43–53, 88 FR 
71476, Oct. 17, 2023] 

PART 45—IDENTIFICATION AND 

REGISTRATION MARKING 

Subpart A—General 

Sec. 
45.1

Applicability. 

Subpart B—Marking of Products and 

Articles 

45.10

Marking. 

45.11

Marking of products. 

45.13

Identification data. 

45.15

Marking requirements for PMA arti-

cles, TSO articles, and Critical parts. 

45.16

Marking of life-limited parts. 

Subpart C—Nationality and Registration 

Marks 

45.21

General. 

45.22

Exhibition, antique, and other air-

craft: Special rules. 

45.23

Display of marks; general. 

45.25

Location of marks on fixed-wing air-

craft. 

45.27

Location of marks; nonfixed-wing air-

craft. 

45.29

Size of marks. 

45.31

Marking of export aircraft. 

45.33

Sale of aircraft; removal of marks. 

A

UTHORITY

: 49 U.S.C. 106(f), 106(g), 40103, 

40113–40114, 44101–44105, 44107–44111, 44504, 
44701, 44708–44709, 44711–44713, 44725, 45302– 
45303, 46104, 46304, 46306, 47122. 

S

OURCE

: Docket No. 2047, 29 FR 3223, Mar. 

11, 1964, unless otherwise noted. 

E

DITORIAL

N

OTE

: Nomenclature changes to 

part 45 appear at 74 FR 53394, Oct. 16, 2009. 

Subpart A—General 

§ 45.1

Applicability. 

This part prescribes the requirements 

for— 

(a) Marking products and articles 

manufactured under— 

(1) A type certificate; 
(2) A production approval as defined 

under part 21 of this chapter; and 

(3) The provisions of an agreement 

between the United States and another 
country or jurisdiction for the accept-
ance of products and articles; and 

(b) Nationality and registration 

marking of aircraft registered in the 

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863 

Federal Aviation Administration, DOT 

§ 45.11 

United States in accordance with part 
47. 

[Doc. No. 2047, 29 FR 3223, Mar. 11, 1964, as 
amended by Amdt. 45–3, 32 FR 188, Jan. 10, 
1967; Amdt. 45–26, 74 FR 53394, Oct. 16, 2009; 
Doc. No. FAA–2015–7396, Amdt. 45–30, 80 FR 
78645, Dec. 16, 2015] 

Subpart B—Marking of Products 

and Articles 

§ 45.10

Marking. 

No person may mark a product or ar-

ticle in accordance with this subpart 
unless— 

(a) That person produced the product 

or article — 

(1) Under part 21, subpart F, G, K, or 

O of this chapter; or 

(2) For export to the United States 

under the provisions of an agreement 
between the United States and another 
country or jurisdiction for the accept-
ance of products and articles; and 

(b) That product or article conforms 

to its approved design, and is in a con-
dition for safe operation; and, for a 
TSO article; that TSO article meets 
the applicable performance standards. 

[Doc. No. FAA–2006–25877, Amdt. 45–26, 74 FR 
53394, Oct. 16, 2009] 

§ 45.11

Marking of products. 

(a) 

Aircraft.  A manufacturer of air-

craft covered under § 21.182 of this chap-
ter must mark each aircraft by attach-
ing a fireproof identification plate 
that— 

(1) Includes the information specified 

in § 45.13 using an approved method of 
fireproof marking; 

(2) Must be secured in such a manner 

that it will not likely be defaced or re-
moved during normal service, or lost or 
destroyed in an accident; and 

(3) Except as provided in paragraphs 

(d) through (h) of this section, must be 
secured to the aircraft fuselage exte-
rior so that it is legible to a person on 
the ground, and must be either adja-
cent to and aft of the rear-most en-
trance door or on the fuselage surface 
near the tail surfaces. 

(b) 

Aircraft engines. A manufacturer 

of an aircraft engine produced under a 
type certificate or production certifi-
cate must mark each engine by attach-

ing a fireproof identification plate. 
Such plate— 

(1) Must include the information 

specified in § 45.13 using an approved 
method of fireproof marking; 

(2) Must be affixed to the engine at 

an accessible location; and 

(3) Must be secured in such a manner 

that it will not likely be defaced or re-
moved during normal service, or lost or 
destroyed in an accident. 

(c) 

Propellers and propeller blades and 

hubs.  Each person who produces a pro-
peller, propeller blade, or propeller hub 
under a type certificate or production 
certificate must mark each product or 
part. Except for a fixed-pitch wooden 
propeller, the marking must be accom-
plished using an approved fireproof 
method. The marking must— 

(1) Be placed on a non-critical sur-

face; 

(2) Contain the information specified 

in § 45.13; 

(3) Not likely be defaced or removed 

during normal service; and 

(4) Not likely be lost or destroyed in 

an accident. 

(d) 

Manned free balloons. A manufac-

turer of manned free balloons must 
mark each balloon by attaching the 
identification plate described in para-
graph (a) of this section. The plate 
must be secured to the balloon enve-
lope and must be located, if prac-
ticable, where it is legible to the oper-
ator when the balloon is inflated. In 
addition, the basket and heater assem-
bly must be permanently and legibly 
marked with the manufacturer’s name, 
part number (or equivalent), and serial 
number (or equivalent). 

(e) 

Aircraft manufactured before March 

7, 1988. The owner or operator of an air-
craft manufactured before March 7, 
1988 must mark the aircraft by attach-
ing the identification plate required by 
paragraph (a) of this section. The plate 
must be secured at an accessible exte-
rior or interior location near an en-
trance, if the model designation and 
builder’s serial number are also dis-
played on the exterior of the aircraft 
fuselage. The model designation and 
builder’s serial number must be— 

(1) Legible to a person on the ground, 
(2) Located either adjacent to and aft 

of the rear-most entrance door or on 
the fuselage near the tail surfaces, and 

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