Also, the HEEDS bottle is the best thing since franks and beans... even in training, having that puppy on you reduces the fear and stress of going in 10 fold. You can buy a small "spare air" tank that Scuba divers carry for a hundred dollars and never worry again about getting snagged and running out of air, or having to leave an unconcious/trapped person in the sinking wreck because you need to surface to breathe.
H-M x 2 - If you have, as you say you have, done some HUET training you will know that this comment is crass and possibly dangerously misleading - particularly to others who may take your words literally and go purchase such a device without training.
The SOLE purpose of HEEDS is to assist
yourself to escape from a ditched machine. Having it with you significantly increases your chance of survival should you be or become snagged during your initial attempt to escape but to state that you never worry again about running out of air is wrong. There is no question that in such an unfortunate event the shock and possibly also cold shock effects will cause you to hyper-ventilate and that little bottle of air wiill not last long.
Not to mention a number of other gotchas that will catch someone out using such equipment without training.
However more importantly it should never be viewed as a means of assisting an unconscious or trapped person in a sinking wreck. Yes of course we would all like to be considered hereos who will save the day and all the passengers with our acts of selfless bravery but going back into a sinking aircraft with a small spare air supply will undoubtedly add an extra name to the casualty list - yours
