The pilot was forced to fly to and land in North Korea .
In December 1969 , a Korean Air Lines YS - 11 was hijacked by a North Korean agent soon after taking off from Gangneung .
The pilot was forced to fly to and land in North Korean   .
In December 1969 , a Korean Air Lines YS - 11 was hijacked by a North Korean agent soon after taking off from Gangneung .