Implementation of high availability mechanisms in the air traffic control SIR-S system

This paper describes the implementation of the mechanisms used to achieve a high level of availability in the SIR-S system through a duplicated Master-Slave configuration. In case of a fault in the Master Node, the Slave Node can carry on the operations as close as possible to the scheduled sequence, in order to match the time optimization criteria with a maximum of overall delay of about 5 msec.<<ETX>>