"TSA ALLOWS CO2 containers" Officially the TSA and the FAA both allow it, and the airlines are REQUIRED TO ALLOW IT because there are UN international carrier conventions that define this as "life saving equipment" which MUST be allowed in the cabin
The fly in the ointment is that your local airport
TSA manager has discretionary authority to ban pretty much anything they please. And most, if not all, of them will ban ALL SEALED CONTAINERS. You might be carrying Sarin gas in there, they don't know and they don't care. Expect the CO2 bottles to be confiscated along with the entire PFD if you try to carry them onboard.
Actual reports from flying sailors indicate there is no consistent policy actually in effect--or on the books
Gord, I'm sorry to disagree but the "approval of the airline" is not relevant here, except if the airline BANS them, which they are not allowed to do (international agreement). Even if the airline allows them, the TSA soda-jerk can confiscate them.
Earlier this week, the TSA and laptop
bag makers announced a new policy which will allow passengers to carry laptops onboard without removing them from their cases, if the new cases meet a new standard for being easily xrayed, i.e. just fabric
and padding, no metal, no cords or cables
in the bag. Well...I've tried putting my laptop
through that way. One inspector will allow it when I say "There's nothing but the laptop, no cables
no nothing they can see right through it". The next inspector simply doesn't care and refuses it--even though it meets the same new standards that are to be accepted.
And (be afraid) there's a lead plate under my laptop, totally opaque to the xray machine. That's only caught the attention of ONE inspector, ONCE. The rest apparently don't care what is on the screen--as long as it doesn't include fabric
TSA: Domestic terrorism in operation. Sorry, but all it does is spread fear and waste money