Runway Friction Measurement Standards
Mark Lacagnina’s article “Skidding Off a Cliff” (ASW, 6/12, p. 20) summarizes findings about a number of factors causing a runway overrun with a tragic outcome, based on the English translation of the Norwegian accident report.
I would add a few comments regarding determination of the general friction characteristics which the investigative agency performed and referred to in its accident report, although not decisive for the conclusion and the outcome.
The original report states that the investigative agency performed a friction measurement using a device belonging to the public road administration. This was a “dry” measurement that yielded a friction level of about 0.7. When it comes to friction measurement for design and maintenance purposes, ICAO Document 9137, Airport Services Manual Pa…
