Veh Air Req is 123, I show 124.
I can equip it no problem but when I zone it stays equipped but I am not in the Yalm. (Sounds like another old bug that has arisen again thanks to the patch.)
The only thing I can think of is that I am using a Deformed Mantidae Mandibles which adds 15 Veh Air and upon zoning it simply is not counted towards the Veh Air req.
Thanks for investigating.