Grooved Runway determination
Hi All,
I am wondering based on the Jeppesen 10-9/10-9A charts how to ultimately determine if a runway surface is grooved or not.
I am aware that in some countries IE: USA that there is certainty on the runway surface.
However, in certain areas of Western Europe at major aerodromes, it remains unclear if these runways are grooved or not?
I understand some state aeronautical information providers have varying qualities of information they supply Jeppesen, but ultimately what is a technique/way to determine the surface status of a runway when unsure.
Thanks.