scope:

FOREWORD

Airworthiness Directives (ADs) are substantive regulations issued by the Federal Aviation Administration in accordance with Title 14 of the Code of Federal Regulations (14 CFR) part 39. ADs are issued when (1) an unsafe condition has been found to exist in particular aircraft, aircraft engines, propellers, or appliances installed on aircraft, and (2) the condition is likely to exist or develop in other aircraft, aircraft engines, propellers, or appliances of the same type design. Once an AD is issued, no person may operate a product to which the AD applies except in accordance with the requirements of that AD.

The purpose of this Airworthiness Directives Manual is to provide procedures for the development, issuance, and distribution of ADs. This manual provides detailed processing procedures and will be updated and changes will be issued as necessary.