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Federal Aviation Administration, DOT 

§ 45.29 

(b) The marks required by paragraph 

(a) of this section must be displayed as 
follows: 

(1) If displayed on the vertical tail 

surfaces, horizontally on both surfaces, 
horizontally on both surfaces of a sin-
gle vertical tail or on the outer sur-
faces of a multivertical tail. However, 
on aircraft on which marks at least 3 
inches high may be displayed in ac-
cordance with § 45.29(b)(1), the marks 
may be displayed vertically on the 
vertical tail surfaces. 

(2) If displayed on the fuselage sur-

faces, horizontally on both sides of the 
fuselage between the trailing edge of 
the wing and the leading edge of the 
horizontal stabilizer. However, if en-
gine pods or other appurtenances are 
located in this area and are an integral 
part of the fuselage side surfaces, the 
operator may place the marks on those 
pods or appurtenances. 

[Amdt. 45–9, 42 FR 41102, Aug. 15, 1977] 

§ 45.27

Location of marks; nonfixed- 

wing aircraft. 

(a) 

Rotorcraft.  Each operator of a 

rotorcraft must display on that rotor-
craft horizontally on both surfaces of 
the cabin, fuselage, boom, or tail the 
marks required by § 45.23. 

(b) 

Airships.  Each operator of an air-

ship must display on that airship the 
marks required by § 45.23, horizontally 
on— 

(1) The upper surface of the right hor-

izontal stabilizer and on the under sur-
face of the left horizontal stabilizer 
with the top of the marks toward the 
leading edge of each stabilizer; and 

(2) Each side of the bottom half of 

the vertical stabilizer. 

(c) 

Spherical balloons. Each operator 

of a spherical balloon must display the 
marks required by § 45.23 in two places 
diametrically opposite and near the 
maximum horizontal circumference of 
that balloon. 

(d) 

Nonspherical balloons. Each oper-

ator of a nonspherical balloon must 
display the marks required by § 45.23 on 
each side of the balloon near its max-
imum cross section and immediately 
above either the rigging band or the 
points of attachment of the basket or 
cabin suspension cables. 

(e) 

Powered parachutes and weight- 

shift-control aircraft. Each operator of a 

powered parachute or a weight-shift- 
control aircraft must display the 
marks required by §§ 45.23 and 
45.29(b)(2) of this part. The marks must 
be displayed in two diametrically oppo-
site positions on the fuselage, a struc-
tural member, or a component of the 
aircraft and must be visible from the 
side of the aircraft. 

[Doc. No. 2047, 29 FR 3223, Mar. 11, 1964, as 
amended by Amdt. 45–15, 48 FR 11392, Mar. 17, 
1983; Amdt. 45–24, 69 FR 44863, July 27, 2004; 
Amdt. 45–25, 72 FR 52469, Sept. 14, 2007] 

§ 45.29

Size of marks. 

(a) Except as provided in paragraph 

(f) of this section, each operator of an 
aircraft must display marks on the air-
craft meeting the size requirements of 
this section. 

(b) 

Height.  Except as provided in 

paragraph (h) of this part, the nation-
ality and registration marks must be 
of equal height and on— 

(1) Fixed-wing aircraft, must be at 

least 12 inches high, except that: 

(i) An aircraft displaying marks at 

least 2 inches high before November 1, 
1981 and an aircraft manufactured after 
November 2, 1981, but before January 1, 
1983, may display those marks until the 
aircraft is repainted or the marks are 
repainted, restored, or changed; 

(ii) Marks at least 3 inches high may 

be displayed on a glider; 

(iii) Marks at least 3 inches high may 

be displayed on an aircraft for which 
the FAA has issued an experimental 
certificate under § 21.191 (d), § 21.191 (g), 
or § 21.191 (i) of this chapter to operate 
as an exhibition aircraft, an amateur- 
built aircraft, or a light-sport aircraft 
when the maximum cruising speed of 
the aircraft does not exceed 180 knots 
CAS; and 

(iv) Marks may be displayed on an 

exhibition, antique, or other aircraft in 
accordance with § 45.22. 

(2) Airships, spherical balloons, non-

spherical balloons, powered parachutes, 
and weight-shift-control aircraft must 
be at least 3 inches high; and 

(3) Rotorcraft, must be at least 12 

inches high, except that rotorcraft dis-
playing before April 18, 1983, marks re-
quired by § 45.29(b)(3) in effect on April 
17, 1983, and rotorcraft manufactured 
on or after April 18, 1983, but before De-
cember 31, 1983, may display those 

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