What is the primary purpose of the Airworthiness Directive system?

• A. To regulate pilot licensing.
• B. To mandate actions to correct unsafe conditions in aircraft equipment.
• C. To set maintenance intervals for all airframes.
• D. To approve new aircraft designs.

Answer: (B)

Airworthiness Directives are the regulatory tool used to correct unsafe conditions in aircraft equipment and ensure ongoing airworthiness. When a safety issue is found in an airplane, its engine, propeller, or onboard systems, the aviation authority issues an directive that requires owners or operators to take specific actions—such as inspection, repair, replacement, or modification—within defined timeframes. These directives are legally enforceable, meaning noncompliance can render the aircraft unairworthy until the required actions are completed. This mechanism is distinct from pilot licensing, general maintenance schedules for all airframes, or the approval of new aircraft designs, which are handled through separate regulatory processes.