The Aircraft Life Support Fitter is a trade specialist who requires expertise in the conditioning of and craftsmanship with textile materials, the fitting of aviation life support systems including protective flying helmets, aircrew oxygen masks, life preserver assemblies, life-rafts and aircraft escape/rescue equipment and other equipment for specific tasks. Knowledge of explosive ordnance handling and inspection requirements related to rescue pyrotechnics is required in addition to personnel rescue beacon functional testing procedures. The types of aircraft that Aircraft Life Support Fitters will maintain throughout their career are the Bell 206B-1 Kiowa, Bell UH-1H Iroquois, Sikorsky S-70A-9 Black Hawk, and the CH47 Chinook.