 In 1950, it was fitted with rigid blades and an efficient simple custom-designed resonant vibration eliminator, similar to later Sikorsky designs.During tests, it crashed or was damaged without casualties at least seven times, for different reasons, and was repaired each time.On 20 July 1952, the BŻ-1 GIL was first displayed to the public, during an air show at Okęcie airfield (it was the first public presentation of a helicopter in Poland and one of first presentations in the Eastern Bloc).