Valueables on a flight?
 

How would you take something extremely valueable and not something you want an ordinary security guy manhandle on a transatlantic flight? Like, an instrument. Obviously, second seat. That's not the question. Getting through security is the question. People flying with a Stradivari surely doesn't let your average TSO touch their instruments, do they?

If you get there with plenty of time to spare and ask politely the TSA can examine by hand and do a residue test. Just be very nice and polite and expect this to take a loooooooong time. I had some artwork in Miami and it took an hour to get through security on a day with no lines. They had to get a supervisor from god knows where.

In fact, it would probably be best to ask for a supervisor at the outset.

Depending on the airport, you might be able to get contact information for a local TSA CSM (if there is one) and you could try to co-ordinate something in advance.

I suppose "extremely valuable" is in the eye of the beholder but, I routinely travel with video production equipment valued in the $10s of thousands. I've never had an issue, after having requested a supervisor and explaining what I have and how it has to be treated. The gear has always been more-than-thoroughly inspected, swabbed and tested but I make certain to leave an extra 30 minutes to get through their theatrics. My gear remains unscathed.

OK so i guess a phone call with the airport is in order to ask how this goes. Thanks.

Whether or not you succeed in contacting someone at the airport ahead of time, I definitely recommend you immediately ask for a supervisor when you get to the checkpoint (unless the CSM can arrange for you to be met). This avoids the risk of any unpleasantness if the initial TSO contact is less than professional. You don't want to (or need) to get into any lengthy discussions with a TSO about why you need to see a supervisor.

I advise the extra caution because you don't appear to have done this before. It improves your chances of a smooth experience, and you will undoubtedly learn from it.

Best of luck! Let us know how it goes (we all benefit from each other's experiences).

If it's that valuable, will you be traveling with security yourself. If so, won't they have liaison w. TSA?

Sounds like you're more worried about mishandling than you are about theft. You certainly can ask for private screening so other passengers can't see the item. As for mishandling, I'd ask for assistance from the airline. Given that you've mentioned purchasing a second seat, the airline may well be willing to assist.

If you're flying with AA, for example, you might find it worthwhile to consider their Five Star program (extra cost, but they do assist you & escort you through the airport process).

And don't forget to smile.