Fazenda Brasil Airstrip (ICAO: SD3S) is a small, private general aviation airstrip located in the municipality of Sena Madureira, in the state of Acre, Brazil. It serves the agricultural and rural operations of the fazenda (farm) for which it is named, providing essential air access to a remote area of the Amazon basin. The airstrip is typical of private rural strips in the Brazilian interior, designed to accommodate light aircraft and small utility planes rather than commercial aviation. Such facilities are critical in the Amazon region, where road infrastructure is often limited or seasonally impassable. No scheduled commercial airline services operate from this airstrip. It functions primarily to support the logistical needs of the surrounding agricultural estate and nearby communities.