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

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What system is responsible for providing anti-skid protection in the 777?

Normal brake system
Alternative brake system
Accumulator brake system
Both normal and alternate braking systems

The correct answer is: Both normal and alternate braking systems

The answer is based on the fact that both the normal brake system and the alternate brake system in the Boeing 777 are designed to provide anti-skid protection. The normal brake system operates primarily during standard braking situations, while the alternate brake system can be used if there's a failure in the normal system. In both systems, anti-skid functionality is essential to prevent the wheels from locking up during braking, which helps maintain control over the aircraft in critical landing scenarios. This feature is crucial for safety, particularly on slippery runways. Moreover, the integration of anti-skid technology into both systems ensures redundancy; if one system fails, the aircraft can still rely on the other to provide essential braking capabilities and maintain safe operations on the ground. Therefore, it's accurate to state that anti-skid protection is a joint feature of both braking systems in the 777.