The invention relates to a method of inspecting the integrity of an avionics system(1) installed in an aircraft, said method consisting in inspecting the integrity in terms of electrical installation and data acquisition and transmission, wherein the method consists in: using an Ethernet network (4) connecting the avionics system (1) to an inspection computer (3); using the computer (3) to generate first inspection signals transmitted to the component and/or to acquire second inspection signals coming from the component; using data read and write means of a controller of the avionics system (1) to generate reference data relating to the component and transmitted to the inspection computer (3) via the Ethernet network (4); and displaying the reference data and the inspection signals and where appropriate recording the reference data and the inspection signals.
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