14 C.F.R. § 45.23

Display of marks; general

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(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]
Notes of Decisions
Cited in 4 cases, 2013–2017 · leading case: United States v. Epskamp, 832 F.3d 154 (2d Cir. 2016).
United States v. Epskamp, 832 F.3d 154 (2d Cir. 2016). “, 14 C.F.R. § 45.23 (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.”
Schweitzer v. Salamatof Air Park Subdivision Owners, Inc., 308 P.3d 1142 (Alaska 2013). “130 provides: If property levied upon is claimed by a third person as the person's property by an affidavit of title to the property, or right to the possession of the property and the ground of the title or right, stating the value of the property, and delivered to the person…”
United States v. Thompson, 275 F. Supp. 3d 107 (D.D.C. 2017). “# 240-3] at 37:19-22; see also 14 C.F.R. § 45.23 (a) ("Each operator of an aircraft must display .”
United States v. Epskamp (2d Cir. 2016). “, 14 C.F.R. § 45.23 (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.”
— 14 C.F.R. § 45.23(a) — 1 case
Schweitzer v. Salamatof Air Park Subdivision Owners, Inc., 308 P.3d 1142 (Alaska 2013). “130 provides: If property levied upon is claimed by a third person as the person's property by an affidavit of title to the property, or right to the possession of the property and the ground of the title or right, stating the value of the property, and delivered to the person…”
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