Latest News

ICAO calls high-level meeting on conflict risk

The International Civil Aviation Organization (ICAO) has announced it is to host a special high-level meeting next Tuesday 29 July, with the directors general of … More ››

FAA lifts Tel Aviv flight ban

The United States Federal Aviation Administration has lifted its restrictions on US airline flights into and out of Israel’s Ben Gurion Airport by cancelling a … More ››

MH17 exposes failure of airspace risk regime

War torn countries are the least likely to be able to conduct an honest appraisal of how dangerous their airspace is, according to a European … More ››

ICAO faces huge challenge on airspace risk role

Calls are growing for UN civil aviation agency ICAO to expand its role and issue safety advisories to give airlines more guidance on operating at … More ››

NATS, military team on Commonweath Games

NATS is working closer than ever with the military in order to deliver a safe and efficient air traffic service during the Commonwealth Games. Teams … More ››

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Latest Feature

Seeking Global Leadership

The British Airline Pilots’ Association (BALPA) has today said that global leadership from the International Civil Aviation Organization (ICAO) is urgently needed to respond to … More ››

Moving Targets

The framework by which each European nation’s air traffic control agency should cut costs to meet Single European Sky targets looks in tatters with some … More ››


As satellite-based navigation plays an ever greater role in US NextGen and its European Single European Sky equivalent to modernise the way in which air traffic is managed, the need to monitor and predict space weather will only increase.

A significant space weather storm occurred when a Wide Area Augmentation System (WAAS) system in the US exceeded its vertical protection limit and was deemed unusable for 15 and 11 hours on two days in October 2003.

Another impact of solar activity occurred in December 2006 when a solar radio burst in a solar flare was so strong that it overwhelmed the GPS signal at L-band, causing a several-minute-long interruption to geodetic-grade GPS receivers operating on the dayside of Earth.

“En route, any decrease in the accuracy the global navigation satellite signal is not such an important issue, say, if you are 10 metres out but it starts to get tricky if you are using it for precision approaches,” says the UK CAA’s Wells.
Weather Check

Tackling space weather’s impact on aviation is rightfully claiming its place on the safety agenda of UN aviation agency ICAO, writes Aimée Turner. Solar weather … More ››

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