No such thing as a ‘good’ wet runway.

[safetypee]

The recent SAFO 15 009 Turbojet Braking Performance on Wet Runways suggests that the term ‘good’ braking action on a wet runway only exists by definition.

If wet ‘good’ is given then the braking action used in the pre-landing landing distance assessment should always be downgraded to mitigate the effect of the unknowns and variability in landing as per the SAFO.