Why does George AI switch from Ralt to Balt at 1420ft?

[sirrah]

I know this is intended behavior and I understand the feature itself, as this changes George to at some point "ignore" terrain elevations (he will still avoid crashing when terrain exceeds 1420ft height luckily ).

But why at 1420ft? Why not a nice and round number like 1000ft or 1500ft?

Not an issue, just wondering about this magical number 

 

As per manual:

 

[AvroLanc]

The max height of the rad alt is 1428ft. The aircraft can’t measure or use rad alts higher than that. 

[sirrah]

10 minutes ago, AvroLanc said:

The max height of the rad alt is 1428ft. The aircraft can’t measure or use rad alts higher than that. 

Ah, that explains it  

Thanks!

[codyj007]

Really wish I could use barometric at lower altitudes with George. It is a hassle having george use radar alt when the terrain is bumpy/hilly. He just pitches up and down and never gains any speed.