Fazenda Campininha Airstrip (ICAO: SI1Y) is a small private airstrip located near Avaré in the state of São Paulo, Brazil. It serves the agricultural estate known as Fazenda Campininha, providing air access for farm operations and private use. As a private facility, it is not open to the general public and does not offer scheduled commercial passenger services. The airstrip is typical of many private rural aerodromes registered with Brazil's civil aviation authority (ANAC) that support agribusiness operations across the country. Avaré is a municipality in the interior of São Paulo state, and the surrounding region is known for agricultural activity. The airstrip supports the logistical needs of the fazenda (farm estate) it serves.