Definition
An FAA publication that lists all Airworthiness Directives currently in effect for aircraft, engines, propellers, and appliances. It is organized by manufacturer and model, and is used by owners, operators, and maintenance personnel to identify which ADs apply to a specific aircraft and to verify compliance.
Plain English
A master list, published by the FAA, of every safety order currently in force for aircraft and aircraft parts. Owners and mechanics use it to check which orders apply to their aircraft and confirm they have all been carried out.
Context Anchor
Seen in aircraft maintenance records, especially during pre-purchase reviews, annual inspections, and checks to confirm the aircraft is legally airworthy.
Derivation
A 'summary' (from Latin summarium, 'a brief statement') here means a consolidated reference document. It gathers all current Airworthiness Directives into one organized place, rather than requiring users to search for them individually.
Why Pilots Care
Confirms whether every required safety modification has been performed so the aircraft remains legal to fly.
Intuition Check
Do not read summary as a casual note or quick recap here. In this context, it means a specific maintenance record used to show the compliance status of required FAA safety actions.
Example Sentence 1
Before signing off the annual inspection, the mechanic cross-checked the aircraft's logbooks against the Summary of Airworthiness Directives to confirm every applicable AD had been complied with.
Example Sentence 2
During the pre-purchase inspection the mechanic referenced the Summary of Airworthiness Directives to confirm no open directives applied to this model.