HSI Operation
EFIS-D10A Pilot’s User Guide
6-3
1.
Mode flag. This indicator, located at the upper left of the HSI page, tells you what mode the radio and
display are in. There are five options for this indicator.
a.
"GPS" in magenta text: This indicates the data source for the overlay is a GPS stream.
b.
"NAV" in black letters on a green background. This indicates that the system is in NAV mode,
but there is no active VOR or localizer tuned. This is the same as a cross hatch indicator in the
TO/FROM flag on a mechanical CDI. Do not rely on any indications on this page except for the
DG and TAS when this flag is set.
c.
"VOR" in green text. This means the radio is tuned to a standard VOR station and is giving a
valid TO or FROM indication.
d.
"LOC" in green text. This indication means that the radio is tuned to a localizer. The glideslope
scale is visible as well, but may be flagged invalid.
e.
"BC" in yellow text. This indication means that the radio is tuned to a localizer and is in back
course mode. The glideslope scale is visible as well, but may be flagged invalid.
Note:
when
flying a back course on an HSI, no reversal is needed since the CDI indicator spins with the DG.
If the course is set to the runway heading of the ILS, when flying the back course, the CDI is
flipped 180 degrees and indicates properly with no reversal needed. If you put the SL-30 into
back course mode, you need to set the course to the heading of the back course runway. Setting
the course to the heading of the primary ILS runway causes the CDI needle to be reversed.
2.
Digital heading indicator. The number in this box is the current magnetic heading of the aircraft in degrees
from 001 to 360. The accuracy of this data depends on the accuracy of the heading calibration for your
EFIS-D10A.
Summary of Contents for EFIS-D10A
Page 2: ......
Page 8: ...Table of Contents viii EFIS D10A Pilot s User Guide Appendix D EFIS D10A Specifications 8 8...
Page 34: ......
Page 60: ......
