PSA Airlines Canadair Regional Jet Systems (PSA-CRJ) Practice Exam

Upon pressing the Master Caution switch, what is the immediate consequence?

1. The system resets

2. Current alert is silenced

3. System goes offline

4. All lights are turned off

The correct answer is: Current alert is silenced

When the Master Caution switch is pressed, its primary function is to silence the current alert. This mechanism allows flight crews to prioritize tasks and focus on actionable items without the distraction of ongoing auditory warnings. The Master Caution system is designed to ensure that alerts are generated for important situations, and pressing the switch acknowledges the alert while temporarily silencing the warning sound. Other options reflect different scenarios that do not accurately represent the function of the Master Caution switch. The system does not reset or go offline merely by pressing the switch, nor does it turn off all lights. Instead, it selectively addresses the audible aspect of the warnings, providing crews with a more manageable cockpit environment while they assess the nature of the caution.