Which component monitors engine status and displays the FADEC mode through CAAS?

Which component monitors engine status and displays the FADEC mode through CAAS?

• A. Digital Engine Control Units (DECUs)
• B. Engine Instrument System
• C. Flight Control Computers
• D. Electrical Control Units

Answer: (A)

The Digital Engine Control Units are responsible for monitoring engine parameters and running the FADEC logic, then feeding that status to CAAS so the FADEC mode can be displayed to the crew. These units continuously track engine health and performance (things like speeds, temperatures, and torque) and determine the current FADEC operating mode. CAAS serves as the cockpit display/alerting system that presents that FADEC mode to the pilot. The other systems don’t perform this combined role: the Engine Instrument System handles general engine indications, but the specific FADEC mode display through CAAS comes from the DECUs; Flight Control Computers focus on flight-control laws, and Electrical Control Units manage electrical subsystems rather than engine control data.

The Digital Engine Control Units are responsible for monitoring engine parameters and running the FADEC logic, then feeding that status to CAAS so the FADEC mode can be displayed to the crew. These units continuously track engine health and performance (things like speeds, temperatures, and torque) and determine the current FADEC operating mode. CAAS serves as the cockpit display/alerting system that presents that FADEC mode to the pilot. The other systems don’t perform this combined role: the Engine Instrument System handles general engine indications, but the specific FADEC mode display through CAAS comes from the DECUs; Flight Control Computers focus on flight-control laws, and Electrical Control Units manage electrical subsystems rather than engine control data.