Assessment of Runway Surface Conditions by British Pendulum Testing under the Global Reporting Format Winter Conditions

Poor braking performance on runways during winter is one of the most significant factors causing runway excursions. The International Civil Aviation Organization (ICAO) proposed a standardized method, named Global Reporting Format (GRF), to establish surface conditions based human observers. GRF includes description conditions. This work aimed at reproducing in laboratory, and monitor effect conditions, both without treatment with using liquid de-icing products (RDP) anti-icing modes, British Pendulum Tester (BPT). reproduction was possible laboratory since BPT results correlated well ratings. worst retained snow ice. Wet obtained water RDPs (potassium formate KFO, potassium acetate KAC hybrid glycol-KAC HYB) behave similarly, indicating that alone for prevention are not any more dangerous than just water. range from wet dry, equivalent Number (BPN) ~40 ~50, considered as good runway. All tested study improved BPN untreated In values favorable KFO reacted almost same way each condition. However, HYB better demonstrated simulated could be used determine efficiency modes.