"It is very rare that I find myself on the opposite side of a debate from CC. However, that is the case on this occassion."
Naah! On second thoughts I take it all back. Just had another look at RNAV Rwy 12 YLHR - maybe it is a crap approach made relatively easy in terms of situational awareness by the use of a moving map display.
I always fly them like an Localiser Appr and set the aircraft as I would to fly a 3 degree glidepath from the indicated top of descent point. Why is that not LHRWF rather than 1.7 nm from LHRWF?
In the case of YLHR I gotta work a bit at getting down in the BE35 cause its 3.49 degrees not the usual 3 degrees.
Why in this Appr is it 5 nm from LHRWI to LHRWF and then 7 nm from LHRWF to LHRWM?
Dr 