Aircraft monitoring system

A non-member network user device connectable to an avionics communication bus structure, and connectable to a monitoring device, comprising:

• at least one bus interface that is connectable to the avionics communication bus structure and configured to receive a broadcast message that is broadcast onto the avionics communication bus structure by at least one network member user device connected to the avionics communication bus structure, the broadcast message including data related to a system that is monitored by the at least one network member user device;
• a field programmable gate array (FPGA) that communicates with the at least one bus interface;
• and
• an output control circuit that communicates with the field programmable gate array and that is connectable with the monitoring device to communicate with the monitoring device,
• wherein the field programmable gate array is programmed to function as:
• a main finite state machine (MFSM) that processes the broadcast message having the data from the at least one bus interface, and
• a transfer finite state machine (TFSM) that generates output data and transfers the generated output data to an output processing circuit.