Wikipedia:WikiProject Aircraft/Engines/Categories

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{{nutshell|This page gives guidance on categorising aero engine articles and lists the known categories for quick reference.}}

Aero engine articles are categorised inline with the guidance at Wikipedia:Categorization.

;Engines

Engines are usually categorised by type, era (defined by first run date and sorted into decades) and manufacturer. Categories should be kept as specific as possible using sub-categories, for example the Rolls-Royce Trent appears in :Category:High-bypass turbofan engines but not :Category:Turbofan engines. It also appears in :Category:Rolls-Royce aircraft gas turbine engines but not :Category:Rolls-Royce.

;Manufacturers

Engine manufacturers are categorised by nationality and also their trading status, for example the de Havilland Engine Company appears in :Category:Defunct aircraft engine manufacturers of the United Kingdom and not :Category:Aircraft engine manufacturers of the United Kingdom.