"M. Tettnanger" wrote in message
om...
How many airports are there where you temporarily cross the
border during the approach?

I notice that Tijuana has an approach path over the SW
tip of the U.S., while Brownsville has an approach
over part of Mexico. El Paso also appears to have
approaches over Ciudad Juarez, but I have no idea
whether these are flown as short finals (remaining
in the U.S.)

Does each approach involve the foreign ATC agency, or
are there letters of agreement where, say, Brownsville
TX approach can control part of Mexico's airspace?

The approaches to McAllen and Harlingen are kept over the US. Brownsville
traffic is probably kept over the US too, but not sure. Reynosa and
Matamoros air traffic stayed on their side of the river. I never seen too
many planes around the river except for border guard and sight-seers. As
long as you stayed on the right side of the river, there wasn't a problem.