Piper Aircraft introduced improved versions of its M-Class single-engine business aircraft, which include the turboprop Meridian, the pressurized piston Mirage and the unpressurized piston Matrix. The biggest design changes result in greater pilot comfort, thanks to such enhancements as a cockpit assist handle to aid access; a fold-down copilot seat that converts to a work surface; and more elbow and hip room. In addition, the cockpit side panels have bigger map pockets capable of holding pilots’ iPads.