The Strangest Instrument Approach I Have Ever Flown Air Facts Journal As we taxied out for takeoff at Denver, we got the latest SFO weather from our dispatcher and found it had deteriorated even further to ceiling zero, visibility 1/16th of a mile in fog with an RVR of 800 feet. Incredibly, this was above our landing minimums, so we didn’t sweat it. And of course, RVR stands for Runway Visual Range, which is the horizontal visibility measured in feet by instruments located next to the runwa...
