Section 7 IFR Procedures
7-10
IDU-680 EFIS Software Version 8.0E (Fixed Wing)
Rev A Nov, 2016
feet from the desired lateral path) by 320 feet tall (±160 feet from the
desired vertical path) spaced horizontally 2000 feet. Skyway boxes
are drawn using the hidden surface removal techniques of the
terrain and obstruction rendering, so a skyway box behind terrain
appears to be so. Skyway boxes disappear in Basic Mode and
Unusual Attitude Mode. In reversionary mode 1 (GPS failure),
skyway boxes disappear after one minute to indicate degraded
navigation performance.
Table 7-1: Highway in the Sky Configuration
Type
HITS
Lines
Fully
Integrated
Autopilot
Partially Integrated
Analog Autopilot
(HDG Mode and/or
NAV/APR mode
discrete inputs)
Un-Integrated
Autopilot or
No Autopilot
Dashed
Not coupled to skyway
Solid
Coupled
to Skyway
Coupled to skyway.
Autopilot is either in
HDG mode with
LNAV heading/roll-
steering sub-mode
engaged or in
NAV/APR mode with
the FMS, FMS1, or
FMS2 as the selected
navigation source.
Always Solid
Skyway box altitude is controlled by VNAV altitude, aircraft altitude,
aircraft climb performance, and climb/descent angle setting. If no
VNAV altitude is set, the skyway boxes describe the desired lateral
flight path of the aircraft at the aircraft's current altitude.
With a VNAV altitude set, the boxes provide both lateral and vertical
guidance. Climb and descent angle settings are controlled
individually with a resolution of 0.1°. VNAV is guided by VNAV
waypoints determined by VNAV altitude and VNAV offset from flight
plan waypoints. There are two sources for VNAV altitudes; the
navigation database and manual input through the ACTV menu.
VNAV altitudes for waypoints without a navigation database or
manually input VNAV altitude are computed using “look-ahead”
rules. When “look-ahead” finds a further VNAV altitude constraint
Summary of Contents for IDU-680
Page 1: ......
Page 445: ...Traffic Rev A Nov 2016 IDU 680 EFIS Software Version 8 0E Fixed Wing T 1 Traffic...
Page 510: ...Datalink Rev A Nov 2016 IDU 680 EFIS Software Version 8 0E Fixed Wing D 1 Datalink...
Page 532: ...Weather Radar Rev A Nov 2016 IDU 680 EFIS Software Version 8 0E Fixed Wing WX 1 Weather Radar...
Page 547: ...Video Rev A Nov 2016 IDU 680 EFIS Software Version 8 0E Fixed Wing V 1 Video...
