An article describes the motivation for use of automatic code generators for the development of critical control applications in the aerospace industry. A V-cycle model based design is introduced and its advantages and development practices that leads from design of a MATLAB/Simulink [1] models to a real target application are depicted. Attention is also paid to FAA/EASA certification authorities requirements ([5], [6], [7]) with respect to a certification process of any newly designed aviation equipment. These practices are being used during the entire development cycle of an aircraft engine subsystems for small civil aircraft (category FAR 23 / CS-23). Key words: aircraft, engine, fadec, certification, modelling, V-cycle.
