Kasaero prepared the certification program for the new certification of the South African JS1 with the EASA in cooperation with the test pilot and certification specialist Sören Pedersen. A team of up to 7 Kasaero specialists supported Jonker Sailplanes and M&D Flugzeugbau subsequently in the realisation of the certification program. The JS1 Revelation is now conforming to the latest revision of the certification specification CS-22 and consequently to the latest safety requirements. The JS1 is currently flying very successfully in all international competitions in the 18m class and with 21m span also in the open class. As the first sailplane ever, the JS1 Revelation is now available fully type-certified with a jet sustainer engine as a fly-home solution. The engine is the also EASA type-certified MDTJ-42 jet turbine from M&D Flugzeugbau.