Yes, I have taken my GT by air from Texarkana to Maui and return. I do have the ScopeGuard case for protection.
I have a small commuter aircraft from TXK to DFW. My
scope/case passed through TSA with no problems. After
it went through, I removed the objective section, wrapped it in bubble material, and put it im my carry-on bag. The scope case was Valet Checked from TXK to DFW. Everything arrived fine.
Once in DFW, I put the objective section back into the Scopeguard case. The case fit easily overhead in
the large aircraft to Maui.
Returning, I did just the opposite: ScopeGuard case from Maui to DFW. No problems with TSA checking it.
Also had to go through an agriculture X-ray checkpoint. Then in DFW, I took the objective out
and put it in my carry-on bag with the wrap. Back in
TXK I took the Valet Checked case and put the objective section back into it.
I said no problem with TSA at TXK, but they did sniff the package, presumably for explosives. I did
hover next to them to make sure the objective was
kept pristine. They were very friendly and accommodating to me. I don't consider this a problem.
I believe that they see a lot of large camera lense, etc., that its not a surprise to them. In fact, sometimes I say its a very large telephoto lens.
I checked into loss and/or damage for the trip, and ended up carrying an insurance policy on the scope and case for one year. It covers complete replacement cost with no deductible, no matter what
the problem was (ie. even if I drop it). Airline
fine print is loss limited to a couple of hundred dollars. Policy costs about $12 per month, but really gives me peace of mind. BTW I convinced them
to insure the scope for real-world replacement value,
not what it cost from A-P.
Since carry-on and checked baggage weight limits are now strictly imposed, when I put the objective piece in my carry-on bag, I put my binoviewers and finder in the 'hole' in the ScopeGuard case.
I hope this overly long narrative helps answer your question. BTW I must say that the GT at 10,000 feet,
on top of Haleakala gave outstanding views of the
Milky Way highlights. It was so impressive, that even
my wife was overwhelmed (she is OK with me doing Astronomy, but its not her cup of tea). Tonight we are
going to a Halloween costume party and she is going
as "The Milky Way" in her home made costume. Of course I'm the astronomer who likes to gaze at the Milky Way.
Hope you have clear skies when you get where you are wanting to go,