FAA AMT Airframe Practice Exam 2026 – Complete Exam Prep Guide

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How is fuel moved overboard in most fuel jettison systems?

Boost pumps

Fuel is typically moved overboard in fuel jettison systems using boost pumps. Option B, natural gravity flow, is incorrect as gravity flow is not utilized in fuel jettison systems. Option C, manual pump systems, is incorrect as manual pumps are typically used only as a backup in case of failure of the main boost pumps. Option D, compressed air systems, is incorrect as compressed air is not commonly used to move fuel overboard in fuel jettison systems.

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Natural gravity flow

Manual pump systems

Compressed air systems

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