Vertical Situation Display
Certain leg types (e.g., holds, heading legs) do not support VNV PATH descents as the lateral distance of those legs is unknown. The VSD will not show a VNV profile for legs with no vertical path guidance.
The Vertical Situation Display (VSD) represents a vertical view of the map display. The VSD horizontal range is equal to the map range when the VSD is in Track mode. When the VSD is in Flight Plan mode, the horizontal range is the lower of: twice the indicated range; or the lowest range that displays all of the remaining Active Flight Plan. The VSD altitude range automatically changes when the map range is changed to keep a ratio of altitude range to horizontal range (until display limits are met). At ranges above the maximum, the altitude range remains constant at the maximum. VSD range may also be adjusted independently from the map display. See the following tables for information on VSD Modes and the Width of Swath.
The following components for flight management may be displayed on the VSD:
-
Airspace Boundaries
-
Vertical Track Vector
-
Climb/Cruise/Descent VNAV
-
PERF Climb Gradient
-
Modified Flight Plan
-
Flight Plan Waypoints and Constraints
-
Holding Pattern Depiction
-
Advisory Descent
-
Approach and Missed Approach
-
Runway Symbols
VSD range can be adjusted independently from the map display. Pan Mode is available while Flight Plan Mode (including Modified Flight Plan Mode) is selected.
|
VSD Mode Button |
Displayed Mode |
FPL Criteria |
Items available on VSD |
|---|---|---|---|
|
AUTO TRK |
AUTO FPL |
Available active FPL & aircraft within FPL swath |
Terrain/obstacles along the Active Flight Plan route, vertical track vector, selected altitude, and Active Flight Plan information 1 |
|
AUTO TRK |
(1) Active FPL available & aircraft not within FPL swath, or (2) Active FPL not available |
Terrain/obstacles along the current track, vertical track vector, and selected altitude |
|
|
FPL Button |
FPL |
Active FPL available |
Terrain/obstacles along the Active Flight Plan route, vertical track vector, selected altitude, and Active Flight Plan information 1 |
|
Active FPL not available |
Only shows message 'Flight Plan Not Available' |
||
|
TRK Button |
TRK |
N/A |
Terrain/obstacles along the current track, vertical track vector, and selected altitude |
|
1 Active flight plan information consists of waypoints, associated altitude constraints, current VNV profile, TOD/BOD, and destination runway. |
|||
The terrain depicted on the VSD is the highest point within the width of the swath determined by the phase of flight. In some instances when the width of the swath changes dramatically the terrain depiction on the VSD may display an abrupt vertical discrepancy. The scenario that this may be noticed the most is while flying an approach that is loaded into the flight plan where the swath jumps from a 0.6 NM swath to a 2.0 NM swath at the missed approach point.
|
Flight Phase |
Swath Width (NM) |
|---|---|
| Departure | 2.0 |
| En Route | 4.0 |
| Arrival | 2.0 |
| Approach (before FAF waypoint) | 2.0 |
| Approach (after FAF waypoint) | 0.6 |
| Missed Approach | 2.0 |