Confusion seems to exist in my part of the world over the difference between uncalibrated and unmonitored. As I understand it, unmonitored is fine as long as you monitor the ident. Uncalibrated; expect the unexpected.It is noticeable that Khartoum ATC are clearing aircraft for VOR approaches in all weather condtions. The ILS is notamed as uncalibrated. If it is safe to use logic in the case they obviously deem the ILS unusable.