. . "1979-07-01" . . . . . . . . . . . . . . . . "NC" . . . . "NCA" . . "North Central Airlines Flight 261" . . "NC" . . . "North Central Airlines#Wisconsin Central Airlines" . . "North South Airways" . "North Central" . . . . "North Central Airlines" . . "Central Northern Airways" . . . . . "North Central Airlines" . . . . . . "1944" . . . . . . "Wisconsin Central Airlines" . .