Plain English Meaning
A free FAA update that comes out every two weeks listing the latest safety orders that aircraft owners and mechanics must comply with. Reading it regularly is how you find out about new required fixes for your aircraft.
Full Definition
A free FAA publication issued every two weeks that lists all newly issued and recently amended Airworthiness Directives (ADs). It serves as a regular update source so owners, operators, and maintenance personnel can stay current on AD activity affecting their aircraft, engines, propellers, and appliances.
Context Anchor
Seen when checking whether an aircraft, engine, propeller, or installed equipment has any new Airworthiness Directives that must be complied with.