Which areas of the Challenger 300/350 aircraft are monitored with fire detection?

The areas of the Challenger 300/350 aircraft that are monitored for fire detection include the powerplant, auxiliary power unit (APU), and main landing gear wheel wells. These critical components are subject to high temperatures and potential fuel leaks, which can create fire hazards. The aircraft is equipped with fire detection systems that continuously monitor these areas to ensure immediate action can be taken in the event of a fire, enhancing safety for both passengers and crew.

Monitoring the powerplant is essential because it contains the engines, where combustion occurs, making it a primary area at risk for fires. The APU, which provides power and air conditioning while the aircraft is on the ground, also requires fire detection due to its operational nature and possible fuel sources. Additionally, the main landing gear wheel wells are vulnerable to fires from brake overheating or tire failures, which necessitates monitoring as well.

Other regions mentioned in the options, such as the cockpit and cabin, do not typically have fire detection systems specifically aimed at detecting fire; instead, they rely on other safety features and equipment to manage smoke and fire. Similarly, while fuel tanks and cargo compartments are crucial areas of concern, they have different mechanisms for fire prevention and management rather than dedicated monitoring systems. Thus, focusing on the