Inputs and processing
Sensors measure physical conditions. Computers validate, process and compare data before sending commands, indications or maintenance information.
Communication
Aircraft use digital and analog interfaces. Data buses reduce wiring and allow multiple users to access common information.
Displays and recording
Flight-deck displays present operational information while recording systems preserve selected data. Maintenance systems may store faults and history.
Troubleshooting mindset
A message identifies a detected condition or failed test. Confirm system context and follow approved fault-isolation logic rather than replacing the named component automatically.