Written with AI assistance and may contain mistakes. Verify against the official Transport Canada publications before relying on anything here.

VFR entry rules by airspace class

Class grades (CAR 601.02; TC AIM RAC 2.8.6): A (most controlled) to G (least).

Controlled airspace (CAR 101.01):

Class	Type	VFR entry	Ref	Where
A	Controlled	No: IFR only, unless Minister authorizes	CAR 601.06	High-level airspace, up to FL 600
B	Controlled	ATC clearance or Minister authorization; entry rule: see CVFR lesson	CAR 601.07(1)	Low-level controlled airspace above 12,500 ft ASL or at/above MEA if higher, below high-level airspace; some busy control zones and TCAs
C	Controlled	ATC clearance before entry; two-way radio required; entry rule: see Class C entry lesson	CAR 601.08(1); sample exam Q20	TCAs and control zones at busy airports
D	Controlled	Two-way radio contact before entry	CAR 601.09	TCAs and control zones at quieter towered airports
E	Controlled	Yes. No clearance or radio contact needed (radio still needed in mandatory frequency area)	-	Low-level airways, control area extensions, transition areas, control zones with no operating tower
F	Special-use: controlled, uncontrolled, or mix	Depends on designation	CAR 601.04; TC AIM RAC 2.8.6	Charted CYA / CYR / CYD blocks
G	Uncontrolled	Yes. No clearance needed	-	Everything left over: low altitudes away from airports and airways, low-level air routes

Class G: ATC has no authority or responsibility to control traffic. ATS gives flight information and alerting only.

Class C and D rules for VFR (TC AIM RAC 2.8.3, 2.8.4):

No working radio: may enter C or D in daylight VMC if ATC authorization obtained before entry (CARs 601.08(2), 601.09(2)).
C and D become Class E when ATC unit not operating.

Trap: Class D needs no ATC clearance, only two-way radio contact before entry (CAR 601.09).

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