"David Brooks" wrote in message
...
They're not secret. They're just incomprehensible.

I didn't suggest that anyone thought the sector boundaries were secret. The
only secrecy mentioned in my post was the active runway.

Nearby Boeing Field has the same flow-dependent sector boundaries as
SeaTac
(http://www.airnav.com/airport/KBFI), and like the OP there is no stated
point on which they are based.

I'm not really sure what you mean by "the same flow-dependent sector
boundaries". If you mean that the approach/departure control listed in the
AFD is the same facility listed for SeaTac, and thus has the same sectors,
I'd have to agree with that. But then, the same thing is true for any
airport using the SeaTac app/dep facility, and I'm not sure it's meaningful
to mention it. Since it's the same facility, of course the boundaries are
the same.

If you mean that Boeing has its own sectors which are similarly dependent on
the current flow, I'll have to disagree. Boeing has no ATC sectors of its
own, since they aren't a radar facility. It does have two tower
frequencies, but those are selected according to the runway you want to land
on, not the active runway.

If you need to be accurate, assume the SEA VOR.

That's my point. You have no need to be so accurate that it matters whether
you assume the VOR or the airport.

Don't try asking Boeing Tower which frequency to use for flight
following either; at least while I was based there, they usually couldn't
figure it out.

Just depends on the controller. I suspect to some extent, controllers don't
want to be bothered. However, if you really want flight following out of
Boeing, what I'd do is call up the clearance delivery frequency before
taxiing and ask if you can get assigned a squawk and controller frequency
for departure.

I much prefer it up at Everett, where approach and departure is handled by
one Center frequency (yes! a Center controller lining up spam-cans for one
of 5 different approaches).

I like PAE better too (after all, that's where my plane is ), but mainly
because it's easier to get a word in edgewise. I never had any trouble
figuring out the frequency to use at Boeing, but finding a quiet moment on
the radio with which to call up the app/dep controller was problematic much
of the time.

Pete