Dynon Avionics EFIS-D10A Pilots Users Guide - Manual (Page 52)

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
e
radio is tuned to a localizer. The glideslope
G.
ing
es
0. The accuracy of this data depends on the accuracy of the heading calibration for your
ent
f the aircraft is the heading that is at the top of the page and is being pointed to by the
TO/FROM flag on a mechanical CDI. Do not rely on any indications on this page except for th
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
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 D
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. Sett
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 degre
from 001 to 36
EFIS-D10A.
3. Directional Gyro (DG). The ring of tick marks and numbers acts as a traditional directional gyro. The curr
magnetic heading o
heading indicator.
EFIS-D10A Pilot’s User Guide 6-3