March 5, 2026   ADSOPP  stands for Aeronautical Data Systems Oxygen Planning Products . Aeronautical Data Systems (ADS) was founded in 1991 by Bill Mack and Jim Stabile, following a decade of dedicated research into aircraft oxygen systems. As early as the 1980s, Mack and Stabile recognized the critical interdependence between an aircraft's fuel and oxygen systems. In worst-case scenarios—such as simultaneous engine failure and cabin decompression (often analyzed at the Equal