Tech Tree Stability Assist

[therealcrow999]

Where on the tech tree is the stability assist unlock, the buttons to click retrograde and prograde that are left of the navball?

[Alshain]

That's not a tech, it's a skill. You have to take your Kerbal Pilot to various moons and planets to level them up. You get most of them with a trip to Mun and Minmus. But that won't get you the maneuver node target.

EDIT: I take that back, it is a tech if you count unmanned probes, in which case the skill is attached to the probe core.

[Gaarst]

They are not on the tech tree: you need a lv1 pilot Kerbonaut for SAS hold and a lv2 for prograde/retrograde hold.

Other options are unlocked with higher levels though I don't which at what level.

EDIT: ninja'd

[therealcrow999]

Oh nice, thanks guys. There is a lot in the career mode that I am beginning to learn. So much to it now, I like it.

[Poofer]

There's also a nose cone that has SAS with the equivalent of a lvl 3 skilled pilot.