Helicopter Mil Mi-2 Hoplite Serial 543303123 Register LZ-501 used by Гранична полиция (bulgarian border police). Aircraft history and location Aircraft History LZ-501 Гранична полиция 1997-02501by Feb 1997 2018-11501 A Technical University of Sofia G I Airframe to TUS by Nov 2018, as ground instructional airframe. Send Updates Use APP to upload photo @ (optional) When Now? / / Send