§ 45.23. Display of marks; general.
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/us/cfr/t14/s§ 45.23·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(a)Each operator of an aircraft must display on that aircraft marks consisting of the Roman capital letter “N” (denoting United States registration) followed by the registration number of the aircraft. Each suffix letter used in the marks displayed must also be a Roman capital letter.
(b)Except for unmanned aircraft, when marks include only the Roman capital letter “N” and the registration number is displayed on limited, restricted, experimental, or provisionally certificated aircraft, the operator must also display on that aircraft near each entrance to the cabin, cockpit, or pilot station, in letters not less than 2 inches nor more than 6 inches high, the words “limited,” “restricted,” “experimental,” or “provisional,” as applicable. [Doc. No. 8093, Amdt. 45-5, 33 FR 450, Jan. 12, 1968, as amended by Amdt. 45-9, 42 FR 41102, Aug. 15, 1977; Amdt. 45-24, 69 FR 44863, July 27, 2004; Amdt. 45-32, 90 FR 35211, July 24, 2025]
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§ 45.23
Display of marks; general.
Fed. Reg.×3
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