CL650：The displayed height is inconsistent with the actual height

[Yn111]

ALT from PFD

The actual ATL from iOS:

 

 

Hope for help ：）THX

[ilias.tselios]

Everything is OK. You are using STD setting on the altimeter and not the barometric pressure of that area.

[ois650]

Additionally if you're flying offline the Challenger is doing it's own thing with the atmosphere - disregard XP11's output.