OOL doesn't really need an ILS...just cOOL and sound approach procedures using GPS/RNP or well constructed VOR approaches.
Many airlines have been flying to Kathmandu using the VOR 02 approach in a more challenging environment lately with nary a problem. I have flown there a couple of times a year and most operators going in there have done so safely and efficiently. Good preparation and focussed flying needed though.
Godspeed and fly safe.
