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Airworthiness Directive (AD)

Applicability and Compliance

How do I determine the applicability of an AD?

The AD subject line specifically identifies the Type Certificate Holder of the product(s) affected by the AD. Specific model(s) affected, and any special considerations such as specific installed part number(s) or modification(s), are listed in the AD applicability section.

How do I find all applicable ADs to a specific product?

In order to find all applicable ADs for a specific product, you must search for ADs on the product, for example, the aircraft, engine(s), propeller, or any installed appliance.  If there are multiple series under the aircraft or engine model, you must also search for ADs applicable to the model, as well as the specific series of that model.

Who has to comply with ADs?

No person may operate a product to which an AD applies, except in accordance with the requirements of the AD. Furthermore, the owner or operator of an aircraft is required by 14 CFR 91.403 to maintain the aircraft in compliance with all ADs.

When do I have to comply with an AD?

The AD specifies a compliance time that relates to the effective date of the AD. That compliance time determines when the actions are required.

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