AMC
25.1533(a)(3) Take-off distances on runways with a grooved or porous friction
course surface
ED Decision 2003/2/RM
Runways that have a grooved or porous friction course (PFC) surface can maintain a significantly higher wheel-braking coefficient of friction when wet than can runways that lack such surface treatments. Where take-off distance information specifically applicable to such runways has been established, this higher level of friction has been taken into account in accordance with CS 25.109(d). It is therefore essential that such information is only approved for use on runways having a grooved or PFC surface that has been constructed and maintained to acceptable standards. FAA AC 150/532012B ‘Measurement, Construction and Maintenance of Skid-Resistant Airport Paving Surfaces’ provides guidance on such standards. Where such operational approval has not been obtained, the performance information applicable to a smooth, hard-surfaced runway must be used.
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