Plain English Meaning
An aircraft is airworthy when it still matches the design the FAA approved and is currently safe to fly. If either part is missing — for example, an unapproved modification, or an overdue inspection — it is not airworthy.
Full Definition
The condition of an aircraft in which it conforms to its FAA-approved type design and is in a state safe for flight. Both elements must be true: the aircraft must match its certified design (no unapproved alterations or missing required equipment), and it must be in safe operating condition based on inspections, maintenance, and the absence of unresolved defects.
Context Anchor
Pilots encounter airworthiness during preflight inspection, checks, , and decisions about whether an may legally and safely be flown.