It seems CO2 cartridges are considered "Hazardous Material" according to the US Government. There are conflicting reports as to wether commercial carriers will allow CO2 cartridges on their aircraft.
I am looking at life preservers to use on trips over water (Bahamas, great lakes). Here is an example:
https://www.amazon.com/ABSOLUTE-OUTDOOR-Automatic-Manual-Inflatable/dp/B0032ALK36/ref=pd_sbs_200_3?_encoding=UTF8&pd_rd_i=B0032ALK36&pd_rd_r=CT6ER7DG38SRT2925QC7&pd_rd_w=sILMm&pd_rd_wg=p9NW4&psc=1&refRID=CT6ER7DG38SRT2925QC7
Questions.....1. Are the CO2 cartridges safe to carry in an unpressurized cabin up to FL 250? 2. Any one with a favorite life preserver that is comfortable, can be worn in flight and is US Coast Guard approved?