With the GTN 750 I’m trying to add in a waypoint constraint to enable VNAV calculations. However it won’t let me put in anything below 1000’ even if the waypoint needs to be at 750’. It just greys out the ‘enter’ button. I swear I used to be able to add any altitude constraint in the past, but now it won’t let you.
I have a waypoint very near the threshold of the runway that I need to place an altitude below 1000’ in order to have VNAV calculate correctly.
Anyone else run into this issue before?
