Ground Power Unit (GPU) Connection Labels — Aircraft
CARs Part V — Aircraft Electrical System Placards · Federal — Canada
§The Law
CARs Part V — s.571 Airworthiness — CARs Part V — Aircraft Electrical System Placards
“Aircraft external power receptacles must be clearly labelled with voltage, frequency, and polarity requirements. Incorrect GPU connection can cause reverse-current damage to avionics and electrical buses.”
View official regulation text✓Plain English
The external power port on your aircraft must show the required voltage (typically 28V DC or 115V AC 400Hz) so ramp crew plug in the right GPU. Wrong voltage destroys avionics.
Ready to Order?
Get compliant aviation law markings — from $29.99. Ships same day.
Specific Requirements
Voltage and current rating on GPU receptacle
"28V DC" or "115V AC 400Hz" as applicable
Polarity marking for DC aircraft
"EXTERNAL POWER — CONNECT NEGATIVE LAST" for DC systems
Weatherproof placard — panel mount or door decal
Replace if illegible — GPU overvoltage can total avionics
Get Compliant
Order Your Aviation Law Compliance Marking
Same-day production. 7-year outdoor vinyl. Ships Canada-wide.
Shop Aircraft Electrical LabelsOr call (289) 228-7021Regulation Quick Facts
- Regulation
- CARs Part V — s.571 Airworthiness
- Jurisdiction
- 🇨🇦 Federal — Canada
- Category
- Aviation Law
What if CARs Part V — s.571 Airworthiness changes next year?
Laws change. When they do, your decal becomes non-compliant overnight. Annual Compliance Plan monitors 150+ Canadian regulations weekly — the moment text changes, a replacement ships to you at $0.
- Free replacement decals when laws change
- 52× weekly statute scans all year
- Digital Compliance Vault for inspections
- Smart Decal QR verification
Compliance Certificate
Every order includes a printable Certificate of Material Compliance — ready for MTO, Transport Canada, or fire marshal inspection.
View sample certificate →