Airworthiness Directives: Overview
Airworthiness Directives (ADs) are a set of legally enforceable rules that apply to aircraft and the following aircraft products: engines, propellers, and equipment, such as; parachutes, seat belts, and fire extinguishers.
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An Airworthiness Directive contains, at a minimum, the following information:
Identification of an unsafe condition.
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Compliance time for the required action(s).
Effective date.
An Airworthiness Directive is issued in the following cases:
An unsafe condition has been determined to exist in an aircraft because of a deficiency in the aircraft, or an engine, propeller, part, or appliance installed on this aircraft.
The condition is likely to exist or develop in other aircraft of similar type.
Application and responsibilities of an Airworthiness Directive are as follows:
The ADs applicable to an aircraft are those issued or adopted by the State of Registry of this aircraft.
No person may operate an aircraft to which an AD applies, except in accordance with the requirements of that AD, unless otherwise agreed with the Civil Aviation Authority of the State of Registry.
Distribution:
Upon issue, Transport Canada ADs are distributed to the registered owners of affected Canadian aircraft.
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There are other optional entities in the Special Interest Groups module (SIGS) to which ADs are forwarded, depending upon the circumstances
CAWIS (SIGS) SPECIAL INTEREST GROUPS (SIGS) MODULEMODULE
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