Need help finding a mod, can't remember the name

[Nitrotic]

Hey guys.  I have, as the title may indicate, a problem.  I am looking for a mod I used to run, but I can't remember what it was called.  The only thing I remember is that I used to be able to use it to set a height I wanted my craft to reach, and then it would automate the process, maintaining the height I told it to be at.  I'm sorry I can't help much more than that, but if you guys have any idea what it might be, or what I might use in its place, I'd really appreciate it.

[DStaal]

The main autopilots are MechJeb and Throttle Controlled Avionics, so I would start looking there.  Pathfinder/Buffalo has a similar feature to that for it's VTOL craft as well.

[Nitrotic]

Thanks a lot, I'll check it out.  I used to use it for landing mining complexes on Minmus/Mun, and then docking supply vessels, and it was a huge help getting the landing precise.  Hope this is it, or will do the trick.