ATC Watcher,
Back to KTM : the RNAV APP there is a basic GPS one , not with vertical guidance and it is a 2D and non-Precision APP .
It is a fullblown 3d , as you call it, rnp ar approach with a 2.8 degree glidepath.
See:
http://www.caanepal.org.np/publicati...12%20Final.pdf