Anchorage Air Route Traffic Control Center Profile: Anchorage Air Route Traffic Control Center Events (2) 1:24 p.m. September 11, 2001: Further Suspicions Raised about Korean Airlines Flight When Pilots Switch Transponder to Hijack Code 2001-09-11 (Shortly After 1:24 p.m.) September 11, 2001: Alaskan NORAD Commander Threatens Shootdown of Korean Airlines Plane Unless It Changes Course 2001-09-11