http://www.aviationtoday.com/2017/04/14/dfs-sees-gbas-future-precision-landing-system/

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Germany’s Frankfurt International Airport has become the world’s first hub airport to feature ground-based augmentation system (GBAS) landings with an increased glide angle of 3.2 degrees. In March, Lufthansa began flying the new precision landings, designed to reduce aircraft noise during the approach phase, using an Airbus A319 and Boeing 747-8.