Pangsuma Airport — Putussibau-Borneo Island, Indonesia

PSU, Pangsuma Airport, serves Putussibau in the interior of West Kalimantan on Indonesian Borneo, one of the most remote regional capitals in the country. The airport provides a crucial air link for this isolated area, where dense rainforest and limited road infrastructure make ground travel to major cities impractical. PSU handles small domestic flights connecting Putussibau to Pontianak, the provincial capital, supporting government administration, trade, and the needs of communities near the Kapuas River. The airport's short runway and modest facilities are typical of Borneo's interior airstrips, which remain essential lifelines despite handling only light turboprop aircraft and limited daily traffic.