Why Did Greece's Aviation Chief Resign While FAA Warns Pilots of Central America GPS Jamming?

The global commercial aviation sector is facing two significant, yet separate, regulatory and safety developments: the resignation of the Greek Civil Aviation Authority Chief and a new FAA Hazardous Situation NOTAM for Central America.

Greek Aviation Chief Resigns After ATC Outage

Giorgos Saounatsos, the head of the Hellenic Civil Aviation Authority (HCAA), resigned from his post. His departure follows a major air traffic control (ATC) service outage on January 4, 2026. The three-hour incident brought air traffic across Greece to a standstill. It also highlighted critical weaknesses in the nation's air navigation system.

The official report cited a complex combination of issues. These included technical failures and outdated telecommunications infrastructure. The problem was attributed to an internal technical malfunction. Specifically, it was caused by "digital noise" and system desynchronization. This desynchronization affected critical communication systems at the Air Traffic Control Centers. The Ministry of Transport accepted the resignation. Giorgos Vagenas, the deputy commander of air navigation, is now temporarily assuming the duties of commander.

In response, the Greek government confirmed a comprehensive action plan. This plan aims to modernize Greece's air navigation systems by 2028. The HCAA's focus now shifts to system reform and strengthening safeguards.

FAA Issues Central America GPS Jamming Warning

Separately, the Federal Aviation Administration (FAA) issued a series of 'Hazardous Situation' Notices to Air Missions (NOTAMs). These advisories cover a large area of Central America. The alert warns U.S. operators to exercise caution. The NOTAMs were issued on January 16, 2026, and are valid for 60 days.

Key Security and Operational Risks

The primary concern is the risk of GNSS interference, including GPS jamming and spoofing. This interference can compromise navigation systems during all phases of flight. The affected airspace includes the overwater areas of the Panama Flight Information Region (FIR). It also covers parts of Mexico, Ecuador, and Colombia.

The advisory is linked to a heightened U.S. security posture in the region. This posture is driven by expanding counter-cartel operations. Strategic interests around the Panama Canal also play a role. The U.S. military's growing presence raises the likelihood of civil aviation exposure to dynamic airspace conditions. Operators are advised to monitor developments closely. The warning applies to aircraft at all altitudes.

Airlines and civil aircraft operators must implement contingency plans. These plans should address potential loss of GPS navigation. The advisory serves as an important aviation security issues signal for the entire industry. The FAA (https://www.faa.gov) emphasizes vigilance in these overwater areas. The International Civil Aviation Organization (ICAO) is likely monitoring the situation closely, given the trans-regional nature of the risk.

• Operational Risks: Possible GNSS degradation, increased reroutes, and altitude restrictions.
• Affected Regions: Overwater areas in the Panama FIR, Mexico, Colombia, and Ecuador.
• Duration: The NOTAMs are valid through March 17, 2026.

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