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The portion over Canada is not designated US Class B but Canadian Class C.

Note that Canadian Class C airspace definition is similar to US Class B. In particular, VFR aircraft must obtain clearance prior to entry. A mode C transponder is required.

To add: airspace over Canada is generally managed by NAV CANADA. Definition for the Canadian side of the Detroit Terminal Control Area (TCA) can be found in NAV CANADA's Designated Airspace Handbook, portions excerpted below (from page 78):

Summary for Detroit TCA bounding coordinates

We can see that these definitions matches the eastern portions of the Detroit TCA exactly, e.g, the outer area altitudes from 6,000' to 10,000' bounded 30nm from the Detroit VOR (DXO).

The Detroit TCA airspace was modified a few years ago, which required coordination between the FAA and Nav Canada. The following discussion from the US Federal Register (page 3307) may be of further interest:

Also, as noted in the NPRM, the eastern portion of the DTW Class B airspace area extends into Canadian airspace. The equivalent Canadian airspace to Class B airspace, as designated in the United States, is Class C airspace. NAV CANADA, the Canadian air service navigation provider, generally designates Class C airspace with a 12,500 feet MSL ceiling, however, has advised the FAA of its willingness to establish corresponding Canadian Class C airspace adjoining the FAA’s DTW Class B airspace with a ceiling of 10,000 feet MSL. Additionally, NAV CANADA advised it would make the Canadian Class C airspace action effective to match the effective date of this DTW Class B airspace modification action.

The portion over Canada is not designated US Class B but Canadian Class C.

Note that Canadian Class C airspace definition is similar to US Class B. In particular, VFR aircraft must obtain clearance prior to entry. A mode C transponder is required.

To add: airspace over Canada is managed by NAV CANADA. Definition for the Canadian side of the Detroit Terminal Control Area (TCA) can be found in NAV CANADA's Designated Airspace Handbook, portions excerpted below (from page 78):

Summary for Detroit TCA bounding coordinates

The Detroit TCA airspace was modified a few years ago, which required coordination between the FAA and Nav Canada. The following discussion from the US Federal Register (page 3307) may be of further interest:

Also, as noted in the NPRM, the eastern portion of the DTW Class B airspace area extends into Canadian airspace. The equivalent Canadian airspace to Class B airspace, as designated in the United States, is Class C airspace. NAV CANADA, the Canadian air service navigation provider, generally designates Class C airspace with a 12,500 feet MSL ceiling, however, has advised the FAA of its willingness to establish corresponding Canadian Class C airspace adjoining the FAA’s DTW Class B airspace with a ceiling of 10,000 feet MSL. Additionally, NAV CANADA advised it would make the Canadian Class C airspace action effective to match the effective date of this DTW Class B airspace modification action.

The portion over Canada is not designated US Class B but Canadian Class C.

Note that Canadian Class C airspace definition is similar to US Class B. In particular, VFR aircraft must obtain clearance prior to entry. A mode C transponder is required.

To add: airspace over Canada is generally managed by NAV CANADA. Definition for the Canadian side of the Detroit Terminal Control Area (TCA) can be found in NAV CANADA's Designated Airspace Handbook, portions excerpted below (from page 78):

Summary for Detroit TCA bounding coordinates

We can see that these definitions matches the eastern portions of the Detroit TCA exactly, e.g, the outer area altitudes from 6,000' to 10,000' bounded 30nm from the Detroit VOR (DXO).

The Detroit TCA airspace was modified a few years ago, which required coordination between the FAA and Nav Canada. The following discussion from the US Federal Register (page 3307) may be of further interest:

Also, as noted in the NPRM, the eastern portion of the DTW Class B airspace area extends into Canadian airspace. The equivalent Canadian airspace to Class B airspace, as designated in the United States, is Class C airspace. NAV CANADA, the Canadian air service navigation provider, generally designates Class C airspace with a 12,500 feet MSL ceiling, however, has advised the FAA of its willingness to establish corresponding Canadian Class C airspace adjoining the FAA’s DTW Class B airspace with a ceiling of 10,000 feet MSL. Additionally, NAV CANADA advised it would make the Canadian Class C airspace action effective to match the effective date of this DTW Class B airspace modification action.

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The portion over Canada is not designated US Class B but Canadian Class C.

Note that Canadian Class C airspace definition is similar to US Class B. In particular, VFR aircraft must obtain clearance prior to entry. A mode C transponder is required.

To add: airspace over Canada is managed by NAV CANADA. Definition for the Canadian side of the Detroit Terminal Control Area (TCA) can be found in NAV CANADA's Designated Airspace Handbook, portions excerpted below (from page 78):

Summary for Detroit TCA bounding coordinates

The Class BDetroit TCA airspace was modified a few years ago, which required coordination between the FAA and Nav Canada. The following discussion from the US Federal Register (page 3307) may be of further interest:

Also, as noted in the NPRM, the eastern portion of the DTW Class B airspace area extends into Canadian airspace. The equivalent Canadian airspace to Class B airspace, as designated in the United States, is Class C airspace. NAV CANADA, the Canadian air service navigation provider, generally designates Class C airspace with a 12,500 feet MSL ceiling, however, has advised the FAA of its willingness to establish corresponding Canadian Class C airspace adjoining the FAA’s DTW Class B airspace with a ceiling of 10,000 feet MSL. Additionally, NAV CANADA advised it would make the Canadian Class C airspace action effective to match the effective date of this DTW Class B airspace modification action.

The portion over Canada is not designated US Class B but Canadian Class C.

Note that Canadian Class C airspace definition is similar to US Class B. In particular, VFR aircraft must obtain clearance prior to entry. A mode C transponder is required.

To add: airspace over Canada is managed by NAV CANADA. Definition for the Canadian side of the Detroit Terminal Control Area (TCA) can be found in NAV CANADA's Designated Airspace Handbook, portions excerpted below (from page 78):

Summary for Detroit TCA bounding coordinates

The Class B airspace was modified a few years ago, which required coordination between the FAA and Nav Canada. The following discussion from the US Federal Register (page 3307) may be of further interest:

Also, as noted in the NPRM, the eastern portion of the DTW Class B airspace area extends into Canadian airspace. The equivalent Canadian airspace to Class B airspace, as designated in the United States, is Class C airspace. NAV CANADA, the Canadian air service navigation provider, generally designates Class C airspace with a 12,500 feet MSL ceiling, however, has advised the FAA of its willingness to establish corresponding Canadian Class C airspace adjoining the FAA’s DTW Class B airspace with a ceiling of 10,000 feet MSL. Additionally, NAV CANADA advised it would make the Canadian Class C airspace action effective to match the effective date of this DTW Class B airspace modification action.

The portion over Canada is not designated US Class B but Canadian Class C.

Note that Canadian Class C airspace definition is similar to US Class B. In particular, VFR aircraft must obtain clearance prior to entry. A mode C transponder is required.

To add: airspace over Canada is managed by NAV CANADA. Definition for the Canadian side of the Detroit Terminal Control Area (TCA) can be found in NAV CANADA's Designated Airspace Handbook, portions excerpted below (from page 78):

Summary for Detroit TCA bounding coordinates

The Detroit TCA airspace was modified a few years ago, which required coordination between the FAA and Nav Canada. The following discussion from the US Federal Register (page 3307) may be of further interest:

Also, as noted in the NPRM, the eastern portion of the DTW Class B airspace area extends into Canadian airspace. The equivalent Canadian airspace to Class B airspace, as designated in the United States, is Class C airspace. NAV CANADA, the Canadian air service navigation provider, generally designates Class C airspace with a 12,500 feet MSL ceiling, however, has advised the FAA of its willingness to establish corresponding Canadian Class C airspace adjoining the FAA’s DTW Class B airspace with a ceiling of 10,000 feet MSL. Additionally, NAV CANADA advised it would make the Canadian Class C airspace action effective to match the effective date of this DTW Class B airspace modification action.

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The portion over Canada is not designated US Class B but Canadian Class C.

Note that Canadian Class C airspace definition is similar to US Class B. In particular, VFR aircraft must obtain clearance prior to entry. A mode C transponder is required.

To add: airspace over Canada is managed by NAV CANADA. Definition for the Canadian side of the Detroit Terminal Control Area (TCA) can be found in NAV CANADA's Designated Airspace Handbook, portions excerpted below (from page 78):

Summary for Detroit TCA bounding coordinates

The Class B airspace was modified a few years ago, which required coordination between the FAA and Nav Canada. The following discussion from the US Federal Register (page 3307) may be of further interest:

Also, as noted in the NPRM, the eastern portion of the DTW Class B airspace area extends into Canadian airspace. The equivalent Canadian airspace to Class B airspace, as designated in the United States, is Class C airspace. NAV CANADA, the Canadian air service navigation provider, generally designates Class C airspace with a 12,500 feet MSL ceiling, however, has advised the FAA of its willingness to establish corresponding Canadian Class C airspace adjoining the FAA’s DTW Class B airspace with a ceiling of 10,000 feet MSL. Additionally, NAV CANADA advised it would make the Canadian Class C airspace action effective to match the effective date of this DTW Class B airspace modification action.

The portion over Canada is not designated US Class B but Canadian Class C.

Note that Canadian Class C airspace definition is similar to US Class B. In particular, VFR aircraft must obtain clearance prior to entry. A mode C transponder is required.

The portion over Canada is not designated US Class B but Canadian Class C.

Note that Canadian Class C airspace definition is similar to US Class B. In particular, VFR aircraft must obtain clearance prior to entry. A mode C transponder is required.

To add: airspace over Canada is managed by NAV CANADA. Definition for the Canadian side of the Detroit Terminal Control Area (TCA) can be found in NAV CANADA's Designated Airspace Handbook, portions excerpted below (from page 78):

Summary for Detroit TCA bounding coordinates

The Class B airspace was modified a few years ago, which required coordination between the FAA and Nav Canada. The following discussion from the US Federal Register (page 3307) may be of further interest:

Also, as noted in the NPRM, the eastern portion of the DTW Class B airspace area extends into Canadian airspace. The equivalent Canadian airspace to Class B airspace, as designated in the United States, is Class C airspace. NAV CANADA, the Canadian air service navigation provider, generally designates Class C airspace with a 12,500 feet MSL ceiling, however, has advised the FAA of its willingness to establish corresponding Canadian Class C airspace adjoining the FAA’s DTW Class B airspace with a ceiling of 10,000 feet MSL. Additionally, NAV CANADA advised it would make the Canadian Class C airspace action effective to match the effective date of this DTW Class B airspace modification action.

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