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Air Traffic Monitoring => Listener Forum => Topic started by: tbrown10 on April 20, 2011, 10:28:14 AM

Title: What is just off 4r at more the 6000 at kjfk
Post by: tbrown10 on April 20, 2011, 10:28:14 AM

I am listing to the KJFK tower feed and I keep hearing the tower controller when he is clearing a plane for landing or takeoff say some beginning with an a is off 4r at more then 6000 but I can understand what it is. Any ideas?

Title: Re: What is just off 4r at more the 6000 at kjfk
Post by: dave on April 20, 2011, 10:29:51 AM

Runway Visual Range (RVR)

http://en.wikipedia.org/wiki/Runway_visual_range

Title: Re: What is just off 4r at more the 6000 at kjfk
Post by: tbrown10 on April 20, 2011, 10:32:52 AM

Thanks I hadn't heard a controller at KJFK say that before

Title: Re: What is just off 4r at more the 6000 at kjfk
Post by: dave on April 20, 2011, 10:34:33 AM

Whenever the ground visibility starts to drop significantly you will hear this at many airports.  You will also see it in the METAR:

KJFK 201351Z 09008KT 1/8SM R04R/4000VP6000FT -DZ FG OVC002 09/08 A2989 RMK AO2 SFC VIS 1/2
                                                 ^^^^^^^^^^^^^