Reference: Total Warfare (9th printing) PDF.
TW pages 259-260 cover the rules for hidden units. However, I noticed an inconsistency: a jumping unit explicitly only reveals hidden units in or adjacent to its landing hex, implying that a unit must be on the ground to reveal hidden units (and therefore receive point-blank shots). However, it is not actually specified that airborne units do not reveal hidden units through movement - there is even an "Airborne Units" heading, but it only specifies that airborne units cannot be hidden.
This can reasonably be split into two sub-questions:
1. Do airborne
ground units (VTOL, WiGE, etc) entering a hex containing a hidden unit or ending their movement adjacent to a hex containing a hidden unit reveal those hidden unit(s)? Even if no, they should presumably do so if they land (similarly to jumping units), and I believe an Active Probe still functions as normal on an airborne ground unit.
2. Do airborne
aerospace units reveal hidden units through movement at all? I believe it was previously ruled that they cannot reveal hidden units using an Active Probe while airborne, so it seems like simple movement would not do so either.
Edit: Source for aerospace with Active Probes not revealing hidden units:
https://bg.battletech.com/forums/index.php?topic=5988.msg909677#msg909677
