My questions:
- why did the deployed the landing gear? they were 10 minutes away from the airport still. This would only elevate the drag
- why a descent so steep?
- they crashed only some meters away from the VOR, could they have mistaken it with the runway at night?
- If they really knew were the runway was, could they reach it with no fuel from FL210?
1) Unknown, it's possible they (thought) they were diving for the runway or VMC flight conditions (get out of the clouds after losing electrical).
2) See above.
3)Possibly.
4) Yes.