Thank you scientest.
Reason for my question was this: Airbus has provided us with "Actual Landing Distance WET" and even Contaminated (standing water, slush, snow, ice) to calculate actual landing distances for failed aircraft equipment (see also
http://www.pprune.org/forums/showthread.php?t=271027 ). And when I'm not mistaken, JAR requires an aircraft with system failures to meet actual landing distances only.
Regards Charly