X-Plane 9.70+ Republic F-105D Thunderchief. The F-105 Thunderchief was a USAF low altitude nuclear attack aircraft designed to penetrate enemy lines at low altitude. When the US became involved in Vietnam the F105 were moved to bases nearby. They started to fly bombing missions which they weren't design for, so they start to suffer accordingly. They took the brunt of the war effort, flying long missions deep in North Vietnam. This new version corrects issues found in the previous upload. By Vasco Ribeiro.