procurement of spares for ai-20d aero engine of an-32 aircraft - insert, rivet, lock stage-2, insert, ring sealing, gear wheel, contact, lock, cage, armature, gasket, reducer assembly, lock, membrane, board, manifold, oil, supply, current conductor, current conductor cover, protecting band, panel, nozzle, ring, sealing, ring sealing, sealing ring, gland, block, balancing, armature, sealing ring (from set spn.4.3.t), core assembly, gauze, coller, rib, shield, ring, retaining, gear wheel, adapter.....