An Air Self-Defense Force C-130 transport will leave for Thailand Thursday to join a U.S. military-led relief operation for survivors of the Dec. 26 tsunamis, the Defense Agency said Wednesday.

The airplane will take relief supplies from the Royal Thai Naval Air Force Base in Utapao, where the U.S. is coordinating its relief efforts, to the northern part of Sumatra Island in Indonesia, the agency said.

If necessary, the agency might send another C-130 to help, it said.