Federal Register

Locating Airworthiness Directives Online Service Information

Some aircraft and aircraft parts manufacturers provide access to their service information online, either free or through paid subscription services.

The following links may help you locate service information incorporated by reference in airworthiness directives:

About IBR

Incorporation by reference (IBR) allows Federal agencies to comply with the requirement to publish rules in the Federal Register and the Code of Federal Regulations (CFR) by referring to materials already published elsewhere.
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