Aircraft Nationality Marks — CARs Standard 221
CARs Standard 221 · Federal — Canada
§Source summary
CARs Standard 221 — CARs Standard 221
Canadian aircraft generally display the nationality mark (maple leaf and C- prefix) as specified in CARs Standard 221 to identify them as Canadian-registered aircraft.
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Every Canadian aircraft starts with "C-" to show it is Canadian. The C- prefix is the nationality mark — internationally recognized as Canada.
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C- prefix required for Canadian aircraft
Part of the full registration mark (C-XXXX)
Displays alongside registration letters
Consistent size with registration letters
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📚Sources & Authority
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🏛 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 221
- Jurisdiction
- 🇨🇦 Federal — Canada
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- Aviation Law
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