Which component is responsible for controlling engine power levels in the Challenger 300/350?

The Full Authority Digital Engine Control (FADEC) is indeed the correct component responsible for controlling engine power levels in the Challenger 300/350. FADEC is an advanced electronic system that manages the engines' performance by automatically adjusting various parameters to ensure optimal operation. This includes controlling fuel flow, ignition timing, and other critical variables necessary for efficient engine performance. The digital nature of FADEC allows for quick and precise adjustments based on real-time data from the engines, which enhances overall efficiency, reduces pilot workload, and improves safety by automatically adapting to varying conditions.

The Flight Control Module primarily deals with the aircraft's flight control surfaces and systems, rather than direct engine control. The Permanent Magnet Alternator is responsible for generating electrical power for the aircraft's systems, rather than managing engine performance. The Pilot Input System reflects the commands and preferences of the pilot but does not independently manage engine power levels like the FADEC does.