"Hamish Reid" wrote in message
...

No one in this thread except maybe Bill Denton ever said approaches
were associated with (or "at") a Center.


Yes, and his was the message I responded to.



However, it's true that there's a tendency in and around the larger
metropolitan areas of the US for approaches *not* to be associated
with, let alone at, a particular airport. I'm based in one such area.


Some TRACONs in close proximity have been combined into single facilities
not located on airports, but approach control facilities are still
associated with airports. After all, providing IFR services to airports is
their reason for being.