Wrong altitude on the PFD on the ground

[subsonic]

Good afternoon. During the last 3-4 flights, the PFD has shown a wrong altitude on the ground. QNH is set correctly. For example is the shown altitude at the gate in EDDH 960 ft with the current QNH at that moment of 1023. The elevation of the airport is 53 ft.

Also, the glideslope interception doesnt happen at the right waypoint, but somewhat later (no matter, which airport), which I think has probably the same cause as the problem described above.

What can be the reason for that?

[jeehell]

What do you use to set the weather? Are you sure you set the QNH which is in P3D?

[subsonic]

I am using Active Sky with real weather and set the QNH which I receive from Topcat. Is that wrong? So far, it worked perfectly.

[dkreiskott]

Hi Alex,
have you tried pressing the update button for the weather in Topcat?
I've also noticed that the first values after starting Topcat are not always correct.

[subsonic]

Hi Alex,
have you tried pressing the update button for the weather in Topcat?
I've also noticed that the first values after starting Topcat are not always correct.

Hi Dieter. Yes, I have always updated the weather values in Topcat before using them in P3D.