Definition
The set of conditions an aircraft must meet to be considered legally and mechanically safe for flight, as defined by the FAA. This includes conforming to its approved type design, being in a condition for safe operation, and having all required inspections, maintenance actions, and Airworthiness Directives complied with and properly documented.
Plain English
The rules that say an aircraft is safe and legal to fly. The aircraft must match how it was originally approved, be in good working condition, and have all its required inspections and paperwork up to date.
Context Anchor
You will meet this term during preflight planning, aircraft inspections, maintenance record checks, and any decision about whether an airplane is legal and safe to fly.
Derivation
From 'airworthy,' a combination of 'air' and 'worthy' (deserving, fit for). The word follows the same pattern as 'seaworthy.' An aircraft is airworthy when it is fit to be in the air. 'Requirements' simply means the conditions that must be met.
Why Pilots Care
An aircraft that fails to meet airworthiness requirements may not be flown legally; pilots who operate without verifying compliance risk grounding, certificate action, or accidents.
Intuition Check
Do not read airworthiness requirements as just “the airplane looks okay.” In aviation, it includes both the aircraft’s physical condition and the required legal items, inspections, records, and equipment for the flight.
Example Sentence 1
Before the flight, the pilot checked the logbooks to confirm the airplane met all airworthiness requirements.
Example Sentence 2
After the annual inspection the mechanic signed off that every airworthiness requirement had been addressed.