Originally Posted by Pete7
The reason is you won't get out of a crashed Heli with an auto inflate so the crew will take your life jacket off and give you one of theirs.
Sorry Pete - wasn't very clear on my part. Ours are manual inflate with foam bouyancy. No problem evac'ing from under ILB (uninflated) but the same jacket is not suitable in the helo, presumably because you could be further under the water-> greater upthrust from foam portion.
(PS- Hi Cork Rib, hope you well!!)