Definition
A three-dimensional working or non-working representation of a real aircraft component, system, or structure, built for training, demonstration, or practice. A mock-up may be full-size or scaled, and may show internal workings, allow hands-on operation, or simply replicate the look and layout of the real item.
Plain English
A built copy of a real aircraft part or system, used for teaching or practice instead of the actual equipment.
Context Anchor
Seen in aviation training when an instructor uses a physical copy of aircraft equipment to explain layout, movement, or procedure.
Derivation
From the verb 'mock,' meaning to imitate or copy. A mock-up is literally something 'mocked up' — put together to imitate the real thing. The hyphenated noun form became common in aviation and engineering during the early 1900s, when full-size wooden replicas of aircraft were built before production began.
Why Pilots Care
Mock-ups let students learn switches, layouts, and procedures safely on the ground, before touching the real aircraft. Time spent on a good cockpit mock-up directly reduces confusion and workload during early flight lessons.
Intuition Check
A mock-up is not just a toy or decoration. In aviation training, it is a purposeful copy used to make a real aircraft item easier and safer to learn.
Example Sentence 1
Before the first flight lesson, the instructor walked the student through the cockpit mock-up to practice the engine start checklist.
Example Sentence 2
Trainees used a full-scale mock-up of the instrument panel to learn switch locations without occupying an aircraft.