The Russian Defense Ministry has grounded its fleet of Mi-28 attack helicopters after a fatal accident during its air show about 170 kilometers southeast of Moscow. One pilot died and another jumped clear when a helicopter gunship came down and burst into flames after performing stunts and firing flares with 3 other helicopters. The Country's Air Force Chief said hydraulic failure had caused the accident. ______________________________________________________________________________ 在莫斯科东南地区170千米高空处一架直升机在进行空中表演时发生事故，俄罗斯国防部下令Mi-28攻击型直升机舰队停飞。这起事故造成一名飞行员死亡，一人跳机生还。事故发生时一架武装直升机在同另三架直升机进行完特技和烟火表演后下坠并爆炸。俄罗斯空军司令表示液压系统失灵导致悲剧的发生。 ________________________________________________________________
