It will never be TSO'd because it needs a battery to work. If the battery dies, so does your headset. I wish bose would design a lighter headset for us, but until they do I'll keep on using the Bose X. It's approved, and you get awesome customer support. My last problem was fixed with a one day turn. Sent it in on Wed, got it back Friday. Don't think you will get that with the QC-2/3.