When Immediate Action Is Required: 5 Things You Need To Know About Emergency Airworthiness Directives

Typically, when a regulator issues an airworthiness directive (AD), a proposal precedes it. For example, in the United States (US), the Federal Aviation Administration (FAA) issues a notice of proposed rulemaking (NPRM), which invites potential stakeholders to comment on the text, as well as provide feedback.