Harlingen to El Paso

I was wondering:

If you filed GPS Direct Harlingen to El Paso you take a bite out of Mexico
around Big Bend, but gain 20-25 minutes no wind in the process. Wondering,
what, if any, problems are there in this sort of [depart US airport, land US
airport, but overfly Mexico during flight] IFR flight plan?
Will a direct clearance even be available? I would assume(?) no
customs/immigration needs upon arrival.
Perhaps people who regularly fly something like this route on the S/ SW tier
can tell what happens in the real world in such cases.
I'd also be interested of there's any difference between this on the
southern border, and, say a Detroit - Rochester NY flight overflying
Canadian airspace en route.
Thanks.

In article , "Mike & Janet Larke"
writes:

I'd also be interested of there's any difference between this on the
southern border, and, say a Detroit - Rochester NY flight overflying
Canadian airspace en route.

Flying over Canada with takeoff and landing in US requires only that you file
(and activate) a flight plan - either VFR or IFR.

There is a ADIZ along the southern border, so crossing back into the US has a
few more hoops to jump thru. Call ahead, have 12 inch numbers on plane, smile
when the F16s go by, etc.

Chuck

Do you REALLY want to be over Mexico if there's a problem ? I'd at least
stay within gliding distance of the United States.


I was wondering:

If you filed GPS Direct Harlingen to El Paso you take a bite out of Mexico
around Big Bend, but gain 20-25 minutes no wind in the process. Wondering,
what, if any, problems are there in this sort of [depart US airport, land
US
airport, but overfly Mexico during flight] IFR flight plan?
Will a direct clearance even be available? I would assume(?) no
customs/immigration needs upon arrival.
Perhaps people who regularly fly something like this route on the S/ SW
tier
can tell what happens in the real world in such cases.
I'd also be interested of there's any difference between this on the
southern border, and, say a Detroit - Rochester NY flight overflying
Canadian airspace en route.
Thanks.