Flying high

[belgianguy]

Hi,

Just noticed an airbus flying very very high. (EZY8806 - FL774)

I also noticed a few minutes before an aircraft that was on approach to EBBR.
It was decending because vertical speed was negative, but the altitude show on the label was increasing. I think maybe something was wrong due to the cold weather? Maybe frozen pitot or something like that.

[viking9]

Vertical speed is not measured by pitot pressure but by the static port which would be unlikely to freeze over.