There was no correlation between aircraft braking coefficient1 and the measured or estimated runway friction coefficient2 in 30 Norwegian runway accidents and incidents over the past 10 years, a study has shown. The report on events on contaminated and slippery runways was published by the Accident Investigation Board Norway (AIBN).3
The report discusses a number of factors that likely influence the mismatch between aircraft braking coefficients and runway friction coefficients, including regulatory climate, limitations of friction measurements, meteorology, runway treatment and operational aspects.
The report indicates that in the majority of the 30 accidents and incidents, the stakeholders involved were simply not aware that some of the existing rules and regulations are dated and based on simplifications of the actual physical conditions.
Many of Norway’s airports are coastal, with terrain in the vicinity that, when combined with windy con…
