BENDIXKing AeroNav 910 Pilot's Manual page 321

(FAF) is reached, do not descend – the conditions required to fly
the approach have not been met and you must fly the missed
approach procedure.
WAAS approach types in the Nav Mode datablock and the nav
source indication in the top right corner of the display include:
LNAV (Lateral Navigation)
Provides lateral (horizontal) guidance only, with standard
GPS precision of 0.3 NM full-scale deflection. This is
essentially the same as a non-WAAS GPS approach. It is
flown as any other non-precision approach – observing step
down restrictions, descend to MDA, fly at MDA altitude to the
missed approach point (MAP); and execute the missed
approach procedure if appropriate. Since there is no vertical
guidance associated with this type of approach, the AeroNav
will not transmit any vertical deviation information. The Nav
Mode datablock will display "LNAV" for the approach type.
LNAV+V (Lateral Navigation with Advisory Vertical Guidance)
This mode provides the same lateral navigation as LNAV,
but also typically presents an ILS GS-like presentation on
the external deviation indicator. The GPS draws a 3-D
picture of the approach based on crossing the FAF at the
depicted altitude. Then it follows a glidepath from the
published approach, which is typically a 3 degree angle to
the touchdown zone. This type of approach remains a non-
precision approach and does not consider any step-down
limitations. The Nav Mode datablock will display "LNAV+V"
for the approach type.
LNAV/VNAV (Lateral Navigation with Vertical Navigation)
In this mode, the GPS provides lateral navigation, providing
more accurate guidance than regular LNAV but easier to
follow indications than a localizer. The vertical navigation is
driven by GPS signals. LNAV/VNAV approaches are
operationally different from LNAV+V in that the glide path is
protected from obstructions but attention still must be
applied to step down fixes. Also, the minimum altitude
presented is a decision altitude/height (DA/DH) – DA being
what is on the altimeter, and DH being the height of the DA
above the touchdown zone elevation. This is not a MDA,
thus, fly it just as though it were an ILS approach: follow the
glide slope all the way to the DA before initiating a missed
89000039-010
Rev 1 May 2019
AeroNav 900/880 Series Pilot's Guide
Navigation 6-29