PA.I.B.K1cFAA-S-ACS-6C · Nov 2023Knowledge
c. Airworthiness Directives and Special Airworthiness Information Bulletins
General airworthiness requirements and compliance for airplanes, including: c. Airworthiness Directives and Special Airworthiness Information Bulletins
Bottom line
An applicable Airworthiness Directive is a legally enforceable requirement. Operating a product that fails to meet an applicable AD violates the rule. A Special Airworthiness Information Bulletin alerts and advises the aviation community. It contains non-regulatory information and recommendations rather than an AD requirement.
FAA references
- 14 CFR 39.7 — Current eCFR checked 2026-11-05
- FAA: Special Airworthiness Information Bulletins
- 14 CFR 39.3 — Current eCFR checked 2026-11-05
- 14 CFR 91.417(a)(2)(v) — Current eCFR checked 2026-11-05
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- Full teaching sections: Read applicability and compliance details; Verify the compliance record; Recurring means recurring
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