Professional Aircraft Accessories, a Greenwich AeroGroup company, has hired Keith Johnson to fill its newly created position of director of Materials and Production Control. In his new role, Johnson will be responsible for the company’s material management, inventory control, master scheduling and supply chain management. “We have witnessed tremendous growth since we have added component repair and overhaul of Boeing 737 landing gears to our capabilities,” said vice president and general manager for Professional Aircraft Accessories Jonathan Clarke. “Keith’s role will be extremely critical in keeping us on track for material and deliveries in all of our areas of concentration as well as continued growth.”