According to the CAIC accident report there were at least 2 members wearing air bags, and "other members were wearing avalungs". The air bags were not deployed, and none of the victims were found with the avalung in their mouth.dsunwall wrote:deleted
Air bags have some sort of guard around the triggers, and avalungs (if built into a backpack) have a sleeve they zip into. Given the scenario (quick tour, desire to stay on mellow angle terrain, etc.) it's easy for me to understand if none of the trigger guards on the airbags were removed, or the avalungs unzipped from their sleeves. I know my avalung spends 99% of it's life zipped up.