The pylon of civil aircraft is an important part that connects the engine and wings,and transfers loads,providing layout space for fire prevention,fuel,hydraulic,air supply and other systems.It is an important compo-nent of civil aircraft,and its good maintainability directly affects the economy,safety and market competition of the aircraft.This article conducts maintenance design for civil aircraft pylon based on general requirements for main-tainability,airworthiness regulations,existing aircraft operating experience,and airline requirements.Using serial parallel maintenance technology,complete the design of the maintenance process for the nacelle,pylon,and its in-ternal equipment and pipeline.Finally,determining the maintenance verification criteria for fire protection,fuel,hydraulic and other systems and using virtual maintenance person,virtual maintenance tools,equipment and pipe-line models,pylon digital prototypes,etc.to complete the virtual maintenance verification of all pylon systems.
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