Sentry Aerospares is an aircraft product Stockist with over $140 million in inventory which we are constantly adding to. We buy, sell, and exchange Escape Slides, APU's and Rotables worldwide for all major platforms from our USA & UK facilites. 24/7 AOG service . Since its inception in 1975, Sentry Aerospace has remained committed to being a premier global aftermarket supplier of quality aircraft products. Our entire company is committed to achieving our mission of exceptional service and inventory through continuous improvement and customer satisfaction. Sentry Aerospace is ISO 9001-2008 registered.