General Authority of Civil Aviation (GACA) Aeronautical Information Publication (AIP) Practice Exam

What causes the forward equipment cooling to reconfigure to OVRD mode automatically?

1. Low battery power

2. In-flight fan failures or smoke detection

3. Exceeding altitude limits

4. Insufficient fuel supply

The correct answer is: In-flight fan failures or smoke detection

The automatic reconfiguration of forward equipment cooling to OVRD mode occurs primarily due to in-flight fan failures or smoke detection. This mode is designed to ensure the safety and functionality of the aircraft's systems in the event of potential overheating or other cooling inadequacies encountered during flight. When in-flight fan failures occur, the cooling system may not be capable of maintaining optimal temperature levels, necessitating a switch to OVRD mode to enhance cooling where it is most needed. Moreover, if smoke is detected, the system must respond promptly to mitigate any risks associated with fires or electrical failures, further underscoring the critical nature of this automatic transition to safeguard both the aircraft and its occupants. This proactive measure ensures that the aircraft maintains an appropriate environment for its operational needs, reducing potential hazards associated with equipment overheating or failure.