On Wed, 03 Jan 2007 11:17:15 -0800, Sam Spade wrote:

Robert M. Gary wrote:



That's a motivation to upgrade the G1000 to WAAS. However, I just read
somewhere that the rumor is that the WAAS G1000 systems will not drive
VNAV to the KAP140. So you won't be able to fly fully coupled VNAV
approachs with the KAP140 (even though you can fly a fully coupled ILS
with it).

If an LNAV approach has VNAV minimums will you be able to use DA or will
you have to use the MDA concept?

On the Jepp charts, the LNAV/VNAV minimums are designated as DA.

The LNAV approaches have an MDA.

Perhaps what you are asking is whether the MDA on an LNAV approach with
advisory vertical guidance can be treated as a DA. When last I checked
(with the local FSDO) this was in a state of flux. However, the written
guidance from Garmin indicates that LNAV approaches should be flown using
the MDA concept, even if there is advisory vertical guidance.

Could be confusing also in that the annunciation on the CNX80 of an LNAV
approach with advisory vertical guidance is LNAV/VNAV.
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)