On 17 May 2014 , Sengaphone died when the plane he was traveling on crashed in northern Laos . He was traveling to Xiangkhouang Province to attend a ceremony celebrating the 55th anniversary of the second division of the Lao People 's Army
plane he was traveling on crashed
2014 Lao People's Liberation Army Air Force An-74 crash
Thongbanh Sengaphone