I flew the chamber in Oz and Europe. Never had a problem in Europe in over 3 years. In Oz however there was the odd ocassion of smell/fumes. I don't think those little donks were designed for hot weather ops. We went to a few summer destinations in europe Italy/Spain/Portugal etc but 30 to 35 degrees is the worst case scenario. Not the 45 + degrees stuff you get down here. The ozzies have done an inordinate amount of testing and I guess to their credit have been pro-active at times with their response. Time will tell as to whether the concerns were justified.