ATC Wind
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ATC Wind
Hello,
Today had one of those rare instances where the tailwind landing limit was very close to our 10 knot maximum.
I thought I had read on here (but couldn't find when I searched) that ATC always report wind in degrees true (ATC always tell the truth)....so we have to apply local magnetic variation to the runway heading to accurately calculate the tailwind / crosswind component.
Please let me know if my memory serves me well or not.
Thanks
Today had one of those rare instances where the tailwind landing limit was very close to our 10 knot maximum.
I thought I had read on here (but couldn't find when I searched) that ATC always report wind in degrees true (ATC always tell the truth)....so we have to apply local magnetic variation to the runway heading to accurately calculate the tailwind / crosswind component.
Please let me know if my memory serves me well or not.
Thanks
The met office report winds in deg T, but ATC report the 2 - minute average in deg M. The runway is designated in deg M, so why should wind reports from ATC be different?
Old fashioned 'instant' dials in fact have a means of adjusting variation.
Old fashioned 'instant' dials in fact have a means of adjusting variation.
Last edited by chevvron; 8th Mar 2013 at 16:19.
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I clicked this thinking it would be about some ATCO stinking up a tower...
I think you're confusing yourself, met briefs are in true "every thing the met man says is true" the irony of course being that it rarely is.
ATC will always give magnetic, although I'm sure some would have the ability to give true were it requested, like asking for "true bearing, true bearing".
Why would they want you doing extra mental gymnastics when they've just cleared you to land?
I think you're confusing yourself, met briefs are in true "every thing the met man says is true" the irony of course being that it rarely is.
ATC will always give magnetic, although I'm sure some would have the ability to give true were it requested, like asking for "true bearing, true bearing".
Why would they want you doing extra mental gymnastics when they've just cleared you to land?
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Generally speaking, you can assume that everything you read is referenced to True like on a flight plan, METAR, TAF's and what you hear for example on ATIS and from the tower is Magnetic.
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Pretty sure it's spelt out reasonably clearly by ICAO.....BASIC Units of Aviation Measurement.
Wind Direction (Runway Ops): Degrees Magnetic
Wind Direction (All other Ops): Degrees True
Who do you fly with again?
Wind Direction (Runway Ops): Degrees Magnetic
Wind Direction (All other Ops): Degrees True
Who do you fly with again?
