Tsunkintza Airstrip (ICAO: SESK) is a small, unpaved general aviation airstrip located in the Tsunkintza area of Ecuador's Morona-Santiago province in the Amazon region. It primarily serves the indigenous Shuar communities and provides a critical air link to an area with limited road infrastructure. The airstrip supports light aircraft operations, typically used for missionary flights, medical evacuations, cargo supply runs, and occasional government or NGO missions. Organizations such as Mission Aviation Fellowship (MAF) have historically operated in this region to connect remote Amazonian communities with essential services. Due to its remote jungle setting, the airstrip has basic or no permanent facilities and is not served by scheduled commercial airline service.