Aircraft Registration Mark C-XXXX Format — CARs Standard 222
CARs Standard 222 — Aircraft Marking · Federal — Canada
§The Law
CARs Standard 222 — CARs Standard 222 — Aircraft Marking
“Canadian aircraft registration marks consist of the nationality designator "C-" followed by four letters assigned by Transport Canada. The marks should be displayed on the fuselage sides and wing undersides in characters at least 30 cm in height.”
View official regulation text✓Plain English
Your aircraft registration is always "C-" plus four capital letters (e.g., C-FABX). These marks should be at least 30 cm (12 inches) tall on the fuselage sides. The same letters go on the underside of the left wing (or both wings for certain aircraft).
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Specific Requirements
C- nationality prefix + 4 assigned letters
30 cm (12") minimum height on fuselage
Left wing underside (or both wings) marking required
Characters in plain block style — no serifs or decorative fonts
Stroke width at least 1/6 of character height
Colour must contrast with aircraft surface
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📚Sources & Authority
Every claim on this page is backed by official government legislation and verified industry sources. Last verified: March 2026.
🏛 Official Government Sources
Canadian Aviation Regulations (CARs) Part II
Justice Laws Canada · March 2026
CARs Part II covers aircraft identification and marking requirements including registration marks, sizing, and placement for Canadian-registered aircraft.
Transport Canada — Aircraft Registration
Transport Canada · March 2026
Official aircraft registration portal. Covers how to register, marking requirements, and the C- prefix system for Canadian aircraft.
RPAS (Drone) Registration — Transport Canada
Transport Canada · March 2026
Drone registration requirements for RPAS between 250g and 25kg. Registration number should be marked on the drone and visible at all times.
All sources are official government publications or recognized industry authorities. Links verified March 2026. If you find a broken link, let us know.
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- Regulation
- CARs Standard 222
- Jurisdiction
- 🇨🇦 Federal — Canada
- Category
- Aviation Law
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