LOT Polish Airlines Flight 16 was a scheduled flight from Newark, United States, to Warsaw, Poland. On 1 November, 2011, the Boeing 767 operating the route made a successful gear-up emergency landing at Warsaw Chopin Airport, after its landing gear failed to extend. All 231 people on board survived without serious injuries. A leak in one of the aircraft's hydraulic systems occurred shortly after takeoff, resulting in the loss of all of the hydraulic fluid supplying the primary landing gear system.