Definition 1 of 2
Definition
A specific design designation assigned by a manufacturer to identify a particular version of an aircraft, engine, propeller, or component. The model identifies a specific configuration with defined performance, dimensions, and approved limitations, and it is the level at which type certification is issued and maintenance documentation is organized.
Plain English
The manufacturer's name for one particular version of an aircraft or part. Two aircraft of the same model are built to the same approved design.
Context Anchor
Pilots see model information on aircraft registration, airworthiness documents, operating handbooks, maintenance records, and aircraft identification plates.
Derivation
From Latin modulus, meaning a small measure or standard. The sense of a 'standard pattern' from which copies are built carried into manufacturing, where 'model' came to mean a specific approved design that production units are built to match.
Why Pilots Care
Knowing the model ensures the pilot applies the correct operating limitations, performance data, and maintenance requirements.
Analogy
It is like a car: the make may be Ford, but the model tells you the specific version, such as Mustang or F-150. Aviation uses the same idea, but the exact model can affect legal and operating details.
Intuition Check
Do not read model as a small copy or display item here. In aviation, model means the specific manufacturer-identified version of the aircraft, engine, propeller, or product.
Example Sentence 1
The mechanic checked the engine's model and serial number against the logbook before signing off the inspection.
Example Sentence 2
Different models of the same aircraft type may have varying maximum takeoff weights and fuel capacities.