High Quality Content by WIKIPEDIA articles! Avionics software is embedded software with legally mandated safety and reliability concerns used in avionics. The main difference between avionic software and conventional embedded software is that the development process is required by law and is optimized for safety. It is claimed that the process described below is only slightly slower and more costly (perhaps 15 percent) than the normal ad-hoc processes used for commercial software. Since most software fails because of mistakes, eliminating the mistakes at the earliest possible step is also a relatively inexpensive, reliable way to produce software. In some projects, however, mistakes in the specifications may not be detected until deployment. At that point, they can be very expensive to fix.