Overview
- The notices took effect on January 16 and run about 60 days, covering Mexico, Central America, the Bogotá and Guayaquil FIRs, the Mazatlán oceanic region and the eastern Pacific.
- The guidance applies to U.S. airlines, FAA-certified pilots and U.S.-registered civil aircraft, instructing operators to use caution at all altitudes.
- The FAA highlights two hazards: unannounced military activity, including aircraft possibly without transponders, and GNSS/GPS jamming or spoofing that can disrupt navigation.
- Mexico’s transport ministry says the advisory is precautionary and imposes no operational restrictions on Mexican carriers or the national airspace system.
- U.S. airlines are assessing route adjustments that could lengthen flights and raise fuel use, and crews are directed to report safety incidents to the FAA’s Washington Operations Center.