"Mitty" wrote in message
...

So the boundary is equivalent to becoming established? Or the "until
established" bit is bad phraseology or redundant?


The TAAs are published portions of the approach, that's right out of the TAA
definition provided in the P/CG:

TERMINAL ARRIVAL AREA (TAA)- The TAA is controlled airspace established in
conjunction with the Standard or Modified T and I RNAV approach
configurations. In the standard TAA, there are three areas: straight-in,
left base, and right base. The arc boundaries of the three areas of the TAA
are published portions of the approach and allow aircraft to transition from
the en route structure direct to the nearest IAF. TAAs will also eliminate
or reduce feeder routes, departure extensions, and procedure turns or course
reversal.



What if you _were_ the controller and _did_ have the crossing traffic.
What would be the clearance you would give to the guy at 4000' to keep him
up there until the potential deal was over? Simply delay the approach
clearance?


That'd do it.