I have seen this bug happen on different missions, I found that if you
had troops or something where the helicopter was going to land (and you
have to have seen it land before to know this ;) it will do a flyby and
never come back... Go figure...
Shane aka GoosE_
I think you have to have the hospital to have the helicopter
land. You can sell the other buildings if you want, but not
the hospital. The truth is you don't need to sell any of your
buildings. The trick is to carefully drive your tanks and rocket
tank to the hill behind the Nod base. Ever so carefully blow
down the stone wall running along the cliff wall. If you hit a
Nod building then it is over. Once the wall is down you can now
drive your APC full of engineers along the cliff wall right up to
the Nod construction yard. Take all the buildings along the back
of the base at the same time. Now all you have to do is mop up.
The obelisks will be out of power.
Actually, you _can_ sell the hospital. I just finished this mission,
and I sold it pretty early in the mission. (C&C was patched to v1.18).
-RC