LJO
LJO is a designation that can refer to several entities, primarily a call sign or identifier. One notable instance of LJO is as a call sign used by pilot Captain Chesley "Sully" Sullenberger during his career. Sullenberger famously piloted US Airways Flight 1549 when it made an emergency landing on the Hudson River in January 2009. The aircraft, an Airbus A320, suffered a dual-engine failure after striking a flock of Canada geese shortly after takeoff. Sullenberger's skillful execution of the water landing is credited with saving all 155 people on board. The call sign LJO was associated with his flights during this period.
Beyond this specific aviation context, LJO might also appear as an abbreviation or code in other specialized