Folks,
Sound like our old mate Bloggs has finally found an aircraft with LNAV/VNAV capabilities, which many of us in Australia have been using since the mid-1980's
Our mates across the Tasman are a bit quicker off the mark than Australia, having introduced a FMS/ILS approach, and STAR FMS arrival routes many years (at least 12) ago. They were intended to be flown LNAV/VNAM until established on final, where approach could be selected to couple to the ILS.
Absent the ILS, the FMS approach (as it was called at the time) had a minima the same as a VOR/DME minima.
The approach design was base on an FAA AC, it all worked very well, I used it in up to 60 kt. X-winds joining RW 23 in NZAA, worked a treat every time.
There is nothing (except some dopy company policies) to stop you using LNAV/VNAV where it is possible, without WAAS equivalent accuracy, as long as you monitor raw data from the appropriate nav aids (see you AFM limitations)or the profile for a GNSS approach, and gain a large proportion of the benefits of FMS based VNAV.
Bas,
Re. the mines etc., the new generation GPS will provide the same accuracy as present GPS/WAAS, without the WAAS. The differential GPS that has been available for yonks in Australia provides centimeter accuracy --- but only for stationary or slow moving receivers.
Tootle pip!!
Last edited by LeadSled; 19th Nov 2012 at 00:36.