Airport Robert Gray Aaf is located in United States near the city of Killeen. The international codes of Robert Gray Aaf airport are ICAO: KGRK and IATA: GRK. Robert Gray Aaf is located at latitude 31.0672 and longitude -97.8289. The elevation above sea level is 1015ft (309m). Local timezone at the airport is UTC/GMT -5:00 hours.