Aviation Battery & Electrical System Markings
CARs Part V — Electrical System Placards · Federal — Canada
§The Law
CARs Part V — s.571 + CAR 625 — CARs Part V — Electrical System Placards
“Aircraft battery compartments and electrical panels must be placarded with voltage, ampere-hour rating, battery type, and safety cautions as required by the aircraft type certificate and maintenance manual.”
View official regulation text✓Plain English
Aircraft batteries — typically 24V lead-acid or Ni-Cd — need labels showing voltage, capacity, type, and explosion/acid hazard warnings. Electrical panel buses need fuse/breaker ID labels so maintainers can isolate faults.
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Specific Requirements
Battery: voltage (12V/24V), amp-hour rating, chemistry
"CAUTION — EXPLOSIVE GAS" on lead-acid battery compartments
Battery type label matches approved equipment list
Circuit breaker/fuse panels: bus identification labels
Main bus, avionics bus, essential bus clearly marked
Lithium battery placards per Transport Canada special conditions
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Shop Aviation Electrical LabelsOr call (289) 228-7021Regulation Quick Facts
- Regulation
- CARs Part V — s.571 + CAR 625
- Jurisdiction
- 🇨🇦 Federal — Canada
- Category
- Aviation Law
What if CARs Part V — s.571 + CAR 625 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.
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Compliance Certificate
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