From 2d348bd641e780cbcb6f363575076c3cc748ba81 Mon Sep 17 00:00:00 2001
From: James Turner <zakalawe@mac.com>
Date: Sat, 29 Sep 2018 12:47:29 +0100
Subject: [PATCH] Change CAVOK visibility to 9999.0 metres

This should trigger automatic computation by AW.
---
 src/Environment/fgmetar.cxx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Environment/fgmetar.cxx b/src/Environment/fgmetar.cxx
index 8495c17c6..d4dacdde1 100644
--- a/src/Environment/fgmetar.cxx
+++ b/src/Environment/fgmetar.cxx
@@ -44,6 +44,7 @@
 
 #include "fgmetar.hxx"
 
+const double CAVOK_VISIBILITY = 9999.0;
 
 FGMetar::FGMetar(const string& icao) :
 	SGMetar(icao),
@@ -55,10 +56,10 @@ FGMetar::FGMetar(const string& icao) :
 	// CAVOK: visibility >= 10km; lowest cloud layer >= 5000 ft; any coverage
 	if (getCAVOK()) {
 		if (_min_visibility.getVisibility_m() == SGMetarNaN)
-			_min_visibility.set(12000.0);
+			_min_visibility.set(CAVOK_VISIBILITY);
 
 		if (_max_visibility.getVisibility_m() == SGMetarNaN)
-			_min_visibility.set(12000.0);
+			_min_visibility.set(CAVOK_VISIBILITY);
 
 		vector<SGMetarCloud> cv = _clouds;;
 		if (cv.empty()) {