Jarod writes:



Newps wrote:

Mxsmanic wrote:

Newps writes:


You can only be in one airspace at a time. At TTD notice the class D
circle isn't a full cirlce. It gets cut off where the class C goes to
the ground.


Yeah, but look at the altitudes. The top of the Class D appears to be
_above_ the floor of the Class C that it overlaps.

The class C does not exist where the class D does.

Are you sure about that? Providence Class C protrudes into Quonset Point
class D airspace and the Quonset Tower is very adamant that the overlapping
area is Class C and requires communication with Providence.

I'm looking at the inset on the Seattle sectional right now. The
dotted line of the TTD Class D doesn't extend into the central part of
the PDX Class C (where the latter starts at the surface). However, in
the two Class C sectors outside that, you see the dotted line of the
Class D, and 25 in a box, indicating that the Class D extends up to
2500 feet inclusive. But those two Class C sectors start at 1700 and
2000 feet, both below the ceiling of the Class D. So is 2000 feet
Class C, or Class D?

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