Which system is responsible for protecting the aircraft from overheating?

The Environmental Control System (ECS) is crucial for managing and regulating the temperature within an aircraft to ensure both passenger comfort and the proper functioning of onboard systems. This system includes components such as air conditioning, temperature control, cabin pressurization, and sometimes even engine bleed air management.

By maintaining appropriate temperature levels, the ECS prevents overheating of various aircraft components, particularly in the cockpit and cabin areas, which can contribute to overall aircraft safety and operational efficiency.

In contrast, while the Electrical System, Fuel System, and Hydraulic System are vital for the operation of the aircraft, they do not have the primary role of regulating temperature or preventing overheating. For example, the Electrical System mainly manages the distribution of power, the Fuel System handles the storage and delivery of fuel, and the Hydraulic System powers flight controls and landing gear. None of these systems are designed to directly address overheating issues in the same way that the Environmental Control System does.