Static Port Warning Decals — Aircraft Airworthiness
CARs Part V — Aircraft Maintenance Standards · Federal — Canada
§The Law
CARs Part V — s.571 Airworthiness — CARs Part V — Aircraft Maintenance Standards
“Static ports should be protected with approved covers and marked to alert ground crews to remove covers before flight. Blockage of static ports causes altimeter, airspeed, and VSI failure and is a major airworthiness hazard.”
View official regulation text✓Plain English
The static port is a small flush hole in the aircraft skin that feeds the altimeter and airspeed indicator. A warning placard near the port alerts maintenance crews not to paint over it, plug it, or leave protective covers on before flight.
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Specific Requirements
Warning placard adjacent to each static port
"REMOVE BEFORE FLIGHT" on any static port cover
"DO NOT PAINT OR PLUG" placard near port
Colour: typically red or yellow for high visibility
Size: large enough to read at arm's length
Replace if faded — obstruction is a safety-of-flight issue
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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
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