I’ve received word FSDG has just updated their release of Paro Bhutan to be fully compatible with Prepar3D v4.

Aerosoft FSDG Paro
For those not clued in, Paro has one of the most difficult approaches, and would be a challenge for even the most capable pilots.
Regular flights by Drukair are performed in an Airbus A319 — it is worth attempting to see if you can pull off the approach and landing on a A320.