Pitot Tube Warning Markings — Remove Before Flight
CARs Part V — Aircraft Maintenance Standards · Federal — Canada
§Source summary
CARs Part V — s.571 Airworthiness — CARs Part V — Aircraft Maintenance Standards
Pitot tubes must not be obstructed. Protective covers should be clearly marked "REMOVE BEFORE FLIGHT" and attached with high-visibility streamers. Pitot heat system activation warnings should be placarded near the pitot to prevent burn hazards during ground operations.
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The pitot tube measures airspeed. If the cover is left on, the airspeed indicator reads zero and the aircraft cannot fly safely. "REMOVE BEFORE FLIGHT" covers should be bright red with streamers so they cannot be missed during pre-flight.
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"REMOVE BEFORE FLIGHT" cover on all pitot tubes
Bright red or orange — high-visibility colour mandatory
Streamer or flag attached to cover
"PITOT HEAT ON — DO NOT TOUCH" placard near heat switch
Interior cockpit label for pitot heat caution
Replace faded covers — a faded cover is a safety hazard
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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 Part V — s.571 Airworthiness
- Jurisdiction
- 🇨🇦 Federal — Canada
- Category
- Aviation Law
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