Definition
A formal inspection conducted by the FAA (or its designee) to verify that a prototype aircraft, component, or part has been built exactly in accordance with its approved type design data — the engineering drawings, specifications, and materials specified during certification.
Plain English
A check by the FAA to confirm that an aircraft or part has been built precisely the way the approved plans say it should be built.
Context Anchor
Seen in aircraft certification and airworthiness discussions, especially when an aircraft, part, or major change must be shown to match approved design data.
Derivation
From Latin 'conformare' — to shape together, to match. A conformity inspection literally checks whether the finished article matches the shape it was supposed to be made to.
Why Pilots Care
It is one of the final gates before a new or modified aircraft receives its airworthiness certificate and can legally fly.
Intuition Check
Do not read conformity inspection as just a general look-over. In this FAA context, it means checking that the actual aircraft or part matches the approved design and is safe for operation.
Example Sentence 1
Before the prototype could begin flight testing, FAA inspectors performed a conformity inspection to confirm it matched the approved type design.
Example Sentence 2
Before the new model could receive its type certificate, the FAA required a full conformity inspection of the first production aircraft.