(It could propose an unwanted failure, different scenarios were discussed.) One was moving down a passageway in a wreck, and misjudging the height of the hatchway. (Potentially, damaging the transmitter, or First stage.
My reply was in regard to Shearwaters Customer Service.
I have to be more careful, how I post. People read "Only." what they want.
Technically, this was my fault. My apologies.
Cheers.
What does that have to do with the statement that buying a Perdix AI could introduce unwanted failures? Nothing. If you don't use AI, then buying the Perdix AI does not add the possibility of unwanted failures. At least, not any more than the likelihood of getting hit by a meteorite.
Your earlier post said that you bought a Perdix, instead a Perdix AI, because the Perdix AI adds the possibility of unwanted failures. No, it doesn't. Actually USING AI maybe does - and that is very debatable. But, having a Perdix AI vs non-AI - and everything else being equal - it does not.
Furthermore, anybody doing wreck penetration and mounting an AI transmitter pointed up or out is an idiot and likely to kill themselves as the result of any number of bad choices, not just transmitter placement.
I use AI on everything, including on my back mount doubles, when I have done wreck penetrations. The transmitter is mounted on the 1st stage so that it points down towards the tank. There is no concern whatsoever of misjudging the height of a hatchway and hitting the transmitter on anything.
Lastly, when I'm doing a wreck penetration on OC, I would much rather have a single AI transmitter sticking down from one first stage, so it is safely between the 1st stage and cylinder, and between the valve and the back of my neck, than have a HP hose with an SPG on it coming from somewhere behind my head and going down behind my shoulder to be clipped off on my waist. The chances of that catching on something and getting damaged (such that I start losing gas) or just having me caught on something are pretty darn small. But, that chance is VASTLY greater than the chance of my AI transmitter failing in a way that causes me to lose gas, or getting caught on anything (which is basically zero).
In reality, from what I can tell, spool failures in SPGs are not uncommon at all, and when one of those goes, you are now losing gas. AI transmitters don't even have a spool (assuming you screw it directly into the 1st stage).