Overview
- The FAA posted multiple NOTAMs on Jan. 16 advising caution due to reported military activity and possible GNSS interference through roughly March 17.
- Coverage includes oceanic airspace off western Mexico, the Gulf of California and Mazatlán regions, Central America and Panama, plus FIRs for Bogotá and Guayaquil and adjacent eastern Pacific corridors.
- The agency warns of risks at all altitudes, including arrival and departure phases, from jamming or spoofing of satellite navigation and from unannounced military operations, including aircraft without transponders.
- The notices apply to U.S. airlines, FAA‑certificated pilots and U.S.-registered civil aircraft, with exceptions when a U.S.-registered aircraft is operated by a foreign carrier.
- Operators are told to report anomalies to the FAA operations center and to consider routing or procedural adjustments, while the FAA has not identified the source of the activity or interference.