What is the primary function of the FIRE switch in the front cockpit?

The primary function of the FIRE switch in the front cockpit is to test the integrity of the fire system. This switch is a crucial component of the aircraft's fire detection and suppression system. When the FIRE switch is activated, it initiates a system check that ensures all components related to fire safety are functioning correctly. This includes verifying that fire detection sensors and suppression agents are operational, which is vital for maintaining flight safety.

By routinely testing the fire system through this switch, pilots can confirm that they are prepared to respond effectively in the event of an actual fire. This testing capability contributes to the overall safety protocol of the aircraft and ensures compliance with aviation safety standards.