Description: By great number of examinations, the current condition of the vehicle assets for the ground support system for aviation flights is defined as morally and physically out of date, that affect the aviation equipment service quality and efficiency. The modernization of automotive means of locomotion (vehicles) is the one of ways for solving this problem. The known alternative strategies for modernizing the automobile park, which include the renewal of power units and chassis, applying the single power module, keep the unsolved problem for choosing the optimal alternative by the "efficiency – cost" criterion. The upgrading variants costs are able to be determined at prices, that are publicly declared for technical systems and aggregates, and by the expenses for arranging the system into service. The comparison of upgrading variants costs is determined by the comparative indicator of profitability, which is defined over the financial-economic analysis for the modernization projects. The upgrade option efficiency should be evaluated by assets expenses during the maintenance of aviation complexes, that depends on pending time for maintenance in the system of "automobile means of locomotion – airplanes". Taking into account that the processes of the ground-based aircraft maintenance are large-scale service processes, it requires to apply methods of the theory of waiting lines for estimation the pending time for maintenance service. The modernization options benchmarking is carried out by the comparative index of overhead "non-productive" expenses, that are liable to occur while pending for the service. The offered method allows to define the optimal modernization variant for automotive vehicles by the "efficiency - cost" criterion with the significant reasonableness and the objectivity level. However, the method application requires significant material and financial expenses for the probation, that could allow to collect the initial data for carrying out the calculations.
Keywords: automobile vehicles, modernization, criterion, efficiency, cost, types of ground handling, waiting time, resource consumption, investments