Radar altimeter showing -27 inside shelters

[Nealius]

Tested at Kutaisi only so far. Starting inside a shelter the radar altimeter shows -27. After exiting the shelter it correctly reads 5.

[webb2526]

I experienced too, this while flying around Vegas. Flew under a crane and the rad alt went to negative figures...

[SilentEagle]

This is most likely because the function to retrieve the radar altitude actually returns the altitude of the terrain plus other objects on top of the terrain. Normally you would fly above these objects and calculating the radar altimeter is simply (current altitude - terrain/clearance altitude). When you are below those objects, the sim is still sending the altitude of the top of the object above you, so the calculation comes out negative.