FINDING WAYS TO IMPROVE RADIO-ELECTRONIC NAVIGATION SYSTEMS OPERATIONAL EFFICIENCY

Abstract

Modern aircraft are equipped with digital pilotage and navigation systems of the new generation, in which all systems have built-in control systems and are structurally made in the form of a number of easily replaceable blocks. The flight safety of modern aircraft is ensured by the redundancy of radio-electronic navigation systems, while the regularity of flights is ensured by the creation of a sufficient number of spare easily replaceable blocks in the exchange fund. The article notes that the high integration of pilotage and navigation complexes and the high intensity of aircraft flights leads to the fact that, according to the results of operational maintenance, part of easily replaceable blocks are mistakenly recognized as inoperable, dismantled and sent for restoration. According to statistics, from 40 to 85% of disassembled easily replaceable units of radio electronic navigation systems are actually functional. This gives rise to the problem of so-called unconfirmed defects. The North American Air Transport Association (ATA) estimates annual losses at an average of 100,000 thousands of dollars for each medium-haul aircraft. A large number of unconfirmed defects entails the need for an unjustified increase in the volume in the exchange fund of spare easily replaceable units to maintain the regularity of flights, which leads to significant capital costs. This work is devoted to the search for opportunities to reduce these costs through the use of ground-based automated control systems, that verify dismantled blocks with high reliability and prevent erroneous sending of workable easily replaceable blocks for restoration. However, purchasing and operating ground-based automated control systems also requires significant investment. The article defines that the efficiency of aircraft operation is directly determined by the optimal variant of the organization of the maintenance and repair system, the choice of which is based on the solution of the complex tasks of diagnostic support, methodical, regulatory support and optimal formation of the exchange fund.