European planemaker Airbus (AIR.PA) is pressing suppliers on its A320 jet program to slash prices by at least 10 percent by 2019 in order to make the company’s main cash cow more competitive, three people familiar with the matter said. The demand for austerity echoes rival Boeing’s (BA.N) cost-cutting Partner for Success initiative, which has redrawn the relationship between suppliers and the world’s biggest planemaker as the industry gears up for record output.