Patent ID: 7519456

Claim:
A maintenance process for a radionavigation installation of an aircraft, said process comprising: a) recording in a first list, as appropriate, first events relating to data external to the aircraft, received by said radionavigation installation; b) recording in a second list, as appropriate, second events relating to malfunctions occurring on board the aircraft; c) performing a check to verify whether said second list comprises at least one second event relating to a malfunction, and: c1) if said second list comprises no second event, refraining from disassembling said radionavigation installation; and c2) if said second list comprises at least one second event relating to a malfunction, analyzing all the second events of said second list, and: α) if none of said second events relates to said radionavigation installation, refraining from disassembling said radionavigation installation; and β) if at least one of said second events relates to said radionavigation installation, analyzing all the first events of said first list, and: β1) if said first events make it possible to prove that the various malfunctions are due to problems relating to said external radionavigation data, refraining from disassembling said radionavigation installation; β2) otherwise, disassembling said radionavigation installation.