Dan
Contributor
Sure it is. I either stuff the 19cf pony in the carry on with my regs, computers, mask and lights or check it.
So, you have no problem removing the valve and regulator for TSA & custom inspections (making sure that you are not stuffing something dangerous/ illegal inside the bottle) every fricking time you fly, on top of additional weight you have to pay extra for when you fly to remote place, requiring limited baggage weight (for small airplane) and rigging up the oversize beer can back together before being filled back up with air? Tell that trick to @billt4sf as he has to do that often flying from San Francisco to Bali & to other remote places in Indonesia, like Raja Ampat.