Originally Posted by
FinnishATCO
A question to fellow controllers around the world.
What means of updating altimeter/QNH are being used in your country/at your unit? Do you have a display showing actual altimeter/QNH values for setting altimeters available in your unit? If not, what kind of routine is used for letting pilots know the actual QNH, and what is the update frequency for the values?
Thank you for any replies in advance!
We have a live QNH/QFE readout which gives pressure to 0.1hPa.
As soon as the QNH or QFE moves up or down by 1hPa, our met page alerts and if it’s a QNH change then we pass that to aircraft via RT.