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.
An Airworthiness Directive (AD) is a document issued or adopted by the Civil Aviation Authority of the State of Registry of an aircraft (Type Certificate Holders - TCH). An AD mandates actions to be performed to restore an acceptable level of safety to an aircraft, when evidence shows that the safety level may otherwise be compromised.
An Airworthiness Directive contains, at a minimum, the following information:
Identification of an unsafe condition.
Identification of the affected aircraft.
Actions required to restore the aircraft to an acceptable level of safety.
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.
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.
0 Comments