Cleveland Terminal Radar Approach Control Profile: Cleveland Terminal Radar Approach Control Events (2) 10:01 a.m.-10:15 a.m. September 11, 2001: Delta 1989 Pilot’s Failure to Use Standard Term in Communications Makes Controllers Suspicious 2001-09-11 (10:18 a.m.) September 11, 2001: Delta 1989 Lands at Cleveland Airport, Moves to Secure Area 2001-09-11