Fazenda União Airport is a small private airstrip located in the municipality of São Félix do Xingu, in the state of Pará, Brazil. It operates under the ICAO designator SS4T and has no assigned IATA code, indicating it does not serve scheduled commercial airline traffic. The airport primarily supports agricultural and fazenda (ranch/farm) operations, which are common throughout the remote interior of Pará state. Such private airstrips are essential infrastructure in this part of the Amazon basin, where road access is limited or seasonally impassable. São Félix do Xingu is one of the largest municipalities by area in Brazil and is situated along the Xingu River. Aviation plays a critical role in connecting remote properties and communities in the region to larger urban centers.