What role does throttle lever position play?

• A. It provides input to the FADEC to determine engine control.
• B. It only affects electrical power distribution.
• C. It is ignored by FADEC and only serves as display.
• D. It controls the landing gear hydraulics.

Answer: (A)

The throttle lever position is the pilot’s primary command for engine thrust and is read by the FADEC as a throttle position signal. The Full Authority Digital Engine Control uses that signal, along with real-time sensor data such as N1, ITT, and EGT, to determine the exact fuel metering and engine parameters needed to achieve and maintain the commanded thrust. In short, moving the throttle changes how much fuel the engine receives and how fast the compressor and turbines run, all regulated by FADEC to deliver the requested power while protecting the engine from limits and faults. This role is specific to engine control; electrical power distribution and landing gear hydraulics are managed by separate systems, and FADEC does not ignore the throttle input.