Airmann:
Yes, I know, that's how we managed to pull off the approach without a hitch, but legally speaking, can we fly the approach if the ground aid is U/S? I don't think we can, but then I'd like someone with a little more experience to comment on this, especially with regards the reality of commercial aviation vs. what the book says.
If a VOR or NDB approach is not coded in the database as an approach, the FMS will remain in terminal mode sensitivity, alerting, and monitoring. You can force the sensitivity to 0.30, but you will still be in terminal mode.