From Barrons:
US aviation authorities issued notices Friday warning airlines to “exercise caution” in the airspace over Mexico and Central America due to “military activities.”
The Federal Aviation Administration posted a series of messages cautioning about a “potentially hazardous situation,” citing the chance for interference to the Global Navigation Satellite System. “The FAA issued flight advisory Notices to Airmen for specified areas of Mexico, Central America, Panama, Bogota, Guayaquil and Mazatlan Oceanic Flight Regions, and in airspace within the eastern Pacific Ocean,” an FAA spokesperson said.