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

What does the advisory message "ANTI-SKID" indicate?

1. Anti-skid system is fully functional

2. Anti-skid system is completely inoperative

3. Brakes are overheating

4. A warning to apply brakes immediately

The correct answer is: Anti-skid system is completely inoperative

The advisory message "ANTI-SKID" typically indicates that there is an issue with the anti-skid braking system. When this message is displayed, it means that the anti-skid system is not functioning as intended – it is completely inoperative. The anti-skid system is crucial for maintaining traction during braking, especially on slippery or wet surfaces. A malfunction can lead to reduced braking effectiveness, increasing the risk of skidding. Pilots need to be aware that when this message is present, the aircraft may not have the benefit of enhanced braking control, which is vital for safety during landing and taxi operations. Although the other options may sound plausible, they do not correctly define the context of the "ANTI-SKID" advisory. For example, having a fully functional anti-skid system would not generate such a warning message. Similarly, indicators of overheating brakes or alerts to apply brakes immediately would signify different issues rather than a complete failure of the anti-skid functionality.