Aircraft Wing Underside Marking — CARs Standard 222
CARs Standard 222 s.6 · Federal — Canada
§The Law
CARs Standard 222 s.6 — CARs Standard 222 s.6
“Registration marks should be displayed on the lower surface of the wing, either on both wings or on the left wing only, depending on configuration.”
View official regulation text✓Plain English
Wing underside markings allow observers from below to identify your aircraft. They are painted or applied on the lower wing surface.
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Specific Requirements
Lower surface of wing required
Both wings or left wing only options
Same size as fuselage marks (30cm min)
Readable from below the aircraft
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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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Shop Aircraft MarkingsOr call (289) 228-7021Regulation Quick Facts
- Regulation
- CARs Standard 222 s.6
- Jurisdiction
- 🇨🇦 Federal — Canada
- Category
- Aviation Law
What if CARs Standard 222 s.6 changes next year?
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