Abstract: An equipment maintenance system (10) comprising a central data storage warehouse (16) for electronically storing technical information and for providing on-line technical assistance for repairing the equipment. A data transceiver (12) transmits data to and receives data from the central data storage warehouse (16). A communications link (22, 26, 28, 30) between the central data storage warehouse (16) and the wireless data transceiver enables accessing of the technical information from the central data storage warehouse (16) by the data transceiver (12). Test means (40) identifies failed system components and minimizes occurrences of false BIT flags, unnecessary system maintenance and removal of operational system components. The maintenance system finds particular utility when implemented in conjunction with a fleet of transport vehicles, such as aircraft (14), or with military weapon systems (14).