The U.S. Federal Aviation Administration (FAA) has issued a series of urgent warnings, known as Notices to Air Missions (NOTAMs), advising commercial airlines to exercise extreme caution when flying over Mexico, Central America, and parts of South America. These advisories, which became effective on Friday, January 16, 2026, are slated to remain in force until March 17, 2026. The FAA's warnings highlight the potential for military activities and Global Navigation Satellite System (GNSS) interference in the affected airspace. The agency explicitly stated that potential risks exist for aircraft at all altitudes, encompassing overflight, as well as the arrival and departure phases of flight. The scope of the warnings includes airspace over Mexico, Central American countries, and specific South American nations such as Panama, Colombia, and Ecuador, along with portions of the eastern Pacific Ocean and the Gulf of California. While the FAA did not specify the exact source of the military activity, multiple reports indicate that these advisories are linked to escalating geopolitical tensions in the region. Credible news outlets corroborate that the warnings follow recent U.S. military operations, including the capture of Venezuelan President Nicolás Maduro, and prior statements from U.S. leadership regarding potential expanded military action against drug cartels in Mexico. Airlines are therefore urged to maintain heightened vigilance and adjust flight operations as necessary in these potentially hazardous areas.