A LOT Polish Airlines de Havilland Dash 8-400, registration SP-EQL performing flight LO-3923 from Warsaw to Krakow (Poland) with 73 passengers and 4 crew, was climbing out of Warsaw’s runway 29 when the crew stopped the climb at FL180 due to problems with the flaps and decided to return to Warsaw. The aircraft landed safely back on Warsaw’s runway 33 about one hour after departure.
The flight was cancelled.
The occurrence aircraft remained on the ground for about 26 hours, then returned to service.