A regional passenger aircraft operated by Indonesia Air Transport lost contact with ground control while approaching a mountainous area between Java and Sulawesi on Saturday, prompting a search and rescue operation. The ATR 42-500, carrying 11 people, vanished from radar after being instructed to correct its approach to Sultan Hasanuddin International Airport. Hikers reported finding debris and small fires near Mount Bulusaraung, which rescue teams are currently verifying. Complicated terrain and weather conditions are hindering the search efforts in the region.