1990 Guangzhou Baiyun airport collisions
Updated: Wikipedia source
On 2 October 1990, a hijacked Boeing 737, operating Xiamen Airlines Flight 8301, collided with two other aircraft at the old Guangzhou Baiyun International Airport while attempting to land. The hijacked aircraft struck parked China Southwest Airlines Flight 4305 first, inflicting only minor damage, but then collided with CAAC Flight 3523, a Boeing 757 waiting to take off, flipping onto its back. A total of 128 people were killed, including seven of nine crew members and 75 of 93 passengers on Flight 8301 and 46 of 110 passengers on Flight 3523, making the incident the deadliest aircraft hijacking prior to the September 11 attacks.