Helicopter Mil Mi-171Sh Serial 171S00060502906U Register 412 used by Bangladesh Biman Bahini BAF (Bangladesh Air Force). Aircraft history and location Aircraft History For 412 see also mi-24d B4004 ch-53a 65-129 mi-171e 412 Bangladesh Biman Bahini BAF Send Updates Use APP to upload photo @ (optional) When Now? / / Send