In May 2002, a dozen air accidents killed 518 people. Three of the crashes were particularly deadly. On May 4 an aircraft crashed into buildings at Kano airport in Nigeria as it prepared to land, killing 149. On May 7, 112 were killed when an aircraft belonging to Chinese airline China Northern crashed into the sea near to Dalian in the northeast of the country. On May 25, a Boeing 747 of Taiwan's China Airlines (CAL) crashed off Taiwan, killing all 225 people. __