RVR measurement

[frazhm]

I remember at EGSS in the mid 80's that the RVR collection process was very much the human observer method. Basically, there was a shed on stilts on the eastern side of the runway. In this shed was a heater, a telephone and a decode sheet. Every 30 mins the tower would phone up and you would count how many opposite side runway edge lights you could see - "x" many= 400m "y" many = 450m and so on, not very scientific, and a damn lonely job punctuated only by the discrete pile of "adult" reading material (ahem!!) that got the poor unfortunate through a foggy night shift!! <img src="smile.gif" border="0"> <img src="smile.gif" border="0"> <img src="smile.gif" border="0">