FAA Cites Military Activities, GNSS Interference in Eastern Pacific Flight Caution

The Federal Aviation Administration (FAA) has issued a series of urgent warnings. These advisories tell U.S. aircraft operators to exercise caution over the eastern Pacific Ocean. The specific areas are near Mexico, Central America, and parts of South America.

The warnings were distributed as Notices to Airmen (NOTAMs). They became effective on January 16, 2026. The advisories are set to remain in effect for 60 days, through March 17, 2026.

Key Risks and Affected Airspace

The FAA cited two main risks for the FAA Eastern Pacific caution.

• Potential military activities in the region.
• Satellite navigation interference, also known as GNSS interference risk.

The NOTAMs warn that potential risks exist for aircraft at all altitudes. This includes overflight, arrival, and departure phases of flight.

Geographic Scope of the Advisory

The flight advisory covers a large section of the Central America airspace. It includes overwater areas and specific Flight Information Regions (FIRs).

• Mexico Flight Information Region (FIR).
• Mazatlán Oceanic FIR.
• Portions of the Central America and Panama FIRs.
• Bogota and Guayaquil FIRs off the coasts of Colombia and Ecuador.

Impact on Commercial Aviation Safety

This 60-day flight caution is primarily directed at U.S. aircraft operators. However, it serves as a critical safety signal for all international carriers.

The warning about military activities satellite navigation interference is a serious concern. GNSS interference can disrupt aircraft navigation systems. This reduces a pilot's situational awareness.

Reports suggest that military aircraft may operate without transponders. This further increases the risk of mid-air incidents. Airlines must review the NOTAMs carefully. They must coordinate closely with air navigation service providers.

Regional Context and Heightened Tensions

The FAA's action follows a period of heightened regional tensions. The U.S. military has conducted operations in the Caribbean Sea and eastern Pacific Ocean. These operations target vessels allegedly involved in drug trafficking.

Recent military action included a large-scale strike in Caracas, Venezuela. This led to the capture of President Nicolás Maduro. The new NOTAMs, however, do not cover the airspace directly over Venezuela.

Mexico's government responded to the advisory. They stated the notice applies only to U.S. aircraft operators. Mexico confirmed that its own airspace and airlines remain unaffected.

Commercial airlines flying routes between North and South America are impacted. They must now adjust flight planning and risk assessment. The goal is to ensure commercial aviation safety for passengers and crew. This highlights the link between geopolitical events and global air travel.

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