Description: A analytical survey of the concept of functional safety is brought. Importance of consideration of functional safety as properties of the information-control systems (ICS) is marked. The enhanced method of the functional safety of the aircrafts onboard ICS analysis and estimation is offered. The example of its application is considered for the estimation of the functional safety for the Аntonov-148 aircraft turbojet engines automatic control system.
Keywords: onboard information-control system, functional safety, risk, harm, analysis and estimation method, summary specific criticism of the ICS elements