In June 2011, Taiwan (Republic of China) reached an agreement to purchase 30 AH-64Es with weapons and associated equipment. On 5 November 2013, Taiwan received the first 6 AH-64s. On 25 April 2014, a Taiwanese AH-64E crashed into a three-story building during a training flight in bad weather conditions, the first AH-64E airframe loss. An investigation ruled out mechanical failure and concluded that the pilots had rapidly descended through clouds at low altitude without checking flight instruments to maintain adequate height; the Army expanded simulator training in response. In October 2014, the fifth and final batch of AH-64Es was delivered to Taiwan.