In the process of troubleshooting , The first step is to confirm the fault , That is to confirm whether the fault reported by the lower level is related to the fault detected by this layer , Judge whether the fault is caused by a single fault , Or is it due to cascading failures ; After fault confirmation , Fault code and data analysis are used to calibrate the fault accurately , on this basis , Initiate system reconfiguration request , Through the system reconfiguration to shield the fault .
It is worth noting that , At present, the static mechanism is used to deal with the fault , That is to determine the fault types and fault treatment methods at different levels in advance , The fault type is uniquely identified by the fault code , When the fault occurs, the fault can be handled according to the fault code .
The reality is , Faults at all levels are not statically determined on the ground . When the fault detection mechanism has found the fault , However, when the type and handling method cannot be determined at this level , This level will report the fault to its immediate superior , And so on , Until the unconfirmed fault is reported to the aircraft level .
Aircraft level is the highest level of fault handling , It is very important to deal with the failure that cannot be confirmed , Because the system level fault handling behavior will affect the normal operation of the whole system .