YEKF, or Yeşilköy Airport, is a historic airport located in Istanbul, Turkey. Initially established in 1912 as a military airfield, it holds the distinction of being the first airport in Turkey. Over the decades, it has witnessed significant developments and transformations, playing a pivotal role in the country's aviation history. The airport gained international recognition during the early years of commercial aviation, serving as a crucial hub for international flights. However, as air travel evolved and the demand for larger airports increased, Yeşilköy Airport began to face limitations due to its size and infrastructure constraints. In response to the growing demands of modern air travel, Istanbul Atatürk Airport was constructed in the 1950s to replace Yeşilköy Airport as Istanbul's primary international airport. Despite this transition, Yeşilköy Airport continued to operate, primarily handling domestic flights and serving as a general aviation facility. In recent years, Yeşilköy Airport has undergone further changes to adapt to the evolving aviation landscape. With the opening of Istanbul Airport, one of the largest airports in the world, in 2018, the role of Yeşilköy Airport became more specialized. It now primarily caters to general aviation, private flights, and some domestic services, providing an alternative for smaller aircraft and private jet operations. One of the airport's notable features is its proximity to the city center of Istanbul, making it a convenient choice for travelers looking to avoid the congestion of larger airports. Additionally, its historical significance adds to its charm, attracting aviation enthusiasts and history buffs alike. While Yeşilköy Airport may not boast the scale or international prominence of Istanbul Airport, it continues to hold its place in Turkey's aviation history. Its evolution reflects the broader trends shaping the aviation industry, from its humble beginnings as a military airfield to its current role as a specialized aviation facility serving Istanbul and beyond.