The Security Council expressed outrage at the downing of a second United Nations chartered aircraft over UNITA-controlled territory on 2 January 1999, which had brought the total number of aircraft lost in recent months to six. There was concern over the fate of the passengers and crew on board the aircraft and the loss of life. It deplored the lack of co-operation by UNITA in clarifying the circumstances of the incidents and in permitting United Nations search and rescue missions; such attacks were unacceptable and unjustifiable.