When must an Airworthiness Directive (AD) be complied with after it becomes effective?

When must an Airworthiness Directive (AD) be complied with after it becomes effective?

• A. During the next scheduled inspection
• B. At the next scheduled overhaul
• C. Immediately after the effective date
• D. As specified in the AD

Answer: (D)

Airworthiness Directives set a safety action with a specific timeframe defined in the directive itself. The correct approach is to comply exactly as the AD specifies, whether that means immediately, before the next flight, by a calendar date, or after a certain number of flight hours or cycles. The important point is that the timing is not fixed universally; each AD states its own compliance window. That’s why the requirement is “as specified in the AD”—it captures the exact deadline or condition the directive sets. The other options imply a single, universal timing, which isn’t how ADs operate.

Airworthiness Directives set a safety action with a specific timeframe defined in the directive itself. The correct approach is to comply exactly as the AD specifies, whether that means immediately, before the next flight, by a calendar date, or after a certain number of flight hours or cycles. The important point is that the timing is not fixed universally; each AD states its own compliance window. That’s why the requirement is “as specified in the AD”—it captures the exact deadline or condition the directive sets. The other options imply a single, universal timing, which isn’t how ADs operate.