The United States Federal Aviation Administration (FAA) has issued a critical security advisory, known as a Notice to Airmen (NOTAM), urging civil aircraft operators to exercise extreme caution when navigating Venezuelan airspace. This warning, released on Friday, 21 November 2025, highlights heightened risks stemming from increased Global Navigation Satellite System (GNSS) interference and ongoing military exercises in the region, which commenced in September. Despite the advisory, several airlines continued their operations to and from Venezuela as of Saturday. U.S. operators are now mandated to provide the FAA with a 72-hour prior notice before entering Venezuelan airspace. This measure supplements an existing 2019 order that already prohibits U.S. airlines from conducting flights to or from Venezuela. The NOTAM specifically addresses the MAIQUETIA (SVZM) Flight Information Region (FIR), which encompasses Venezuelan territory and extends approximately 350 miles into the Caribbean Sea. It is important to note that FIRs are administrative divisions for air traffic control and do not align with national boundaries.