koubin
Good question, well put!
VIBAL Visibilité balise Runway-marker visibility
The above is from the French AIP.
The problem for me is, I haven't the faintest idea what they mean by 'Runway-marker visibility'.
Doesn't sound like anything I've seen in ICAO Annex 14. Anyone know better than me? I don't like being stumped by something like this!
Perhaps my employer will send me on a trip to LFPB to find out - not!
Cheers,
The Odd One