"Jessica Taylor" wrote in message
...

Are those airportless Class D examples heliports (e.g. Sikorski, near
Bridgeport CT)?


No, they are Class D airspace without any towered airport, heliport, or
seaplane base. At least they were, it seems some of them no longer have
Class D airspace.

One of them was Pearson Field in Vancouver, WA, about seven miles northeast
of Portland International. Pearson had Class D airspace from the surface
to the overlying Portland Class C airspace. Vancouver had no control tower
and was the only airport in the Class D surface area. Vancouver now has a
Class E surface area.


Another one is adjacent to the Seattle Class B surface area on the west
side. This one still exists, you can view it at the following link:

http://makeashorterlink.com/?F27B2314B



A third one was south of the El Toro MCAS which is now closed, the Class D
airspace apparently was dropped when the base closed. Part of this one
didn't even touch the surface. I have old charts which depict this area, I
can post some images if you're interested.