哥伦比亚失联客机确认坠毁，机上15人全部遇难

Group 1 - The core event reported is the crash of Satena Airlines flight HK 4709 in Norte de Santander, Colombia, resulting in the death of all 15 individuals on board, including a congressman and a presidential candidate [1][2]. - The flight lost contact in an area with adverse weather conditions, which may have contributed to the incident [2]. Group 2 - The article mentions the broader context of the aviation industry, highlighting the impact of such incidents on public perception and regulatory scrutiny [3].