From wiki
War in Sadah
The Yemeni Air Force was used extensively against the Houthi insurgency in Yemen. The Yemeni Air Force was proven effective in destroying enemy positions and buildings. Most enemy casualties were attributed to air raids. A number of accidents did occur, including one in which a fighter plane accidentally fired a missile and killed more than 80 civilians. During Operation Scorched Earth on 2 and 5 October and 8 November 2009, three fighter jets reported as a MiG-21 and two Su-22 respectively crashed during military missions. The government claimed the crashes were due to technical malfunctions, while the rebels claimed they shot them down with MANPADS. In 2006, F-5Es, MIG 21s and Su-22s repeatedly bombed Houthi positions all over Saada.[30][31]
War on Terror
As part of the Yemeni al-Qaeda crackdown, the Yemeni Air Force launched air raids on terrorist bases throughout Yemen to kill important terrorist leaders. The raids were confronted with anti-aircraft fire. After Ali Abdullah Saleh declared his support for George Bush in the war on terror, America provided Yemen with military aid. This included the Yemeni air force. The USA helped the YAF through training, funds, and munitions. They also provided them with Aircraft and Helicopters including 2 Cessna 208 light transport planes, 2 C-130 Hercules Cargo planes, 14 F-5E fighter jets, 1 CASA CN.295 medium cargo plane, 1 Beechcraft super king air, 3 Bell 206 helicopters, 6 Bell 212 helicopters, 3 Bell 214 helicopters, and 4 UH-1H helicopters. The Yemeni air force benefited immensely from US assistance. The US trained them in providing close air support for Yemeni Special Forces fighting against Al Qaeda.[32]