Figure 3B-53. VNAV Profile
(6) VNAV Guidance and Alerting. After a
waypoint with an altitude becomes active the FMS-800
provides vertical steering to fly the entered or default
VNAV climb or descent path. On the Pilot VNAV
Steering page, Figure 3B-54 and Table 3B-40, the
specified VNAV path parameters are displayed on
data line 2. The continuously updated altitude is on
data line 1 and the vertical rate and angle for a direct
vertical path to the waypoint are presented on data line
Prior to VNAV capture the distance to the
BOC/TOD is displayed. This display is dashed after
the VNAV path is captured.
Figure 3B -54 and Table 3B-40 show a typical
VNAV profile along with the alerts associated with the
VNAV capture and termination. Ten seconds prior to
the VNAV path capture, the CDU page alerts flashes.
At an altitude 1000 feet below/above the waypoint
crossing altitude, a second alert is issued.
When the active waypoint for the VNAV
guidance passes into history or is deleted, the VNAV
steering parameters become invalid or are reset to
their default values for the next vertical waypoint in the
Figure 3B-54. VNAV Capture and Termination