A routine flight to tag a cow moose in Alaska took a bizarre turn when the tranquilized animal charged the Hughes 369D and struck its tail rotor, the Anchorage Daily News reports. The collision brought down the aircraft, which was owned and operated by Ketchikan, Alaska-based Temsco Helicopters. The helicopter reportedly was negotiating a confined area while following the moose. When the moose charged, the pilot could not maneuver out of the way and the moose ran into the tail rotor. The animal, whose nose was cut off in the collision, was euthanized at the scene. The incident happened March 3 near Gustavus in southeast Alaska. Officials of the FAA and the Alaska Department of Fish and Game said it was the first time they could recall such a collision.