Due to land subsidence on the runway strip, this study focuses on soil improvement at Gusti Sjamsir Alam Airport. The soil in the runway strip area predominantly consists of soft soil, which leads to significant compression and a prolonged consolidation period. To accelerate this process, a preloading method combined with Prefabricated Vertical Drains (PVD) was used. PVDs are designed to shorten the drainage path for pore water, expediting the compression process. Generally, the prediction of soil compression is calculated based on consolidation parameters derived from both field and laboratory data. The effectiveness of PVDs depends on the spacing between installations; closer spacing results in faster pore water expulsion. PVDs are typically installed to the depth of compressible soil to minimize future settlement rates. Soil improvement planning in this study is based on a combination of laboratory and field data, as well as correlation values. The calculation predicted a final settlement (H-final) of 0.73 m from an initial height (H-initial) of 0.9 m, with a total settlement (Sc) of 0.14 m and a natural compression period of approximately 4 years. To speed up the consolidation process, PVDs were installed in a triangular pattern to a depth of 9 m, with spacings of 1 m, 1.25 m, 1.5 m, and 1.75 m considered. The study concluded that a PVD spacing of 1.5 m achieved the best results, reaching a consolidation degree of 90.87% within 4 weeks. In the slope stability analysis conducted using the XSTABL software, an embankment with a height of 90 cm was found to be stable under both dry surface conditions (with a safety factor, SF, of 3.054) and saturated conditions (SF of 2.829).