All pointers and scales are flagged.
All heading related markers and pointers are removed.
Flight control computer standby mode is activated.
EADI dim control Control of the intensity
of the raster and stroke writing on the EADI is
accomplished by a control knob placarded ADI DIM,
which is an outer concentric which is an outer concentric
knob with the DH SET/TEST knob. Turning the knob
counterclockwise to the OFF position will cause the
EADI to become blank and the composite mode to be
displayed on the EHSI.
Single-needle pointer bearing source
selector switch. The single-needle pointer bearing
source selector switch, located on the lower left side of
the display controller, is used to select which navigation
information sources will provide information to the single-
needle bearing pointer.
receives bearing information from TACAN navigation
receives bearing information from the inertial navigation
receives bearing information from ADF navigation
VOR1. Single-needle pointer
receives bearing information from # 1 VHF navigation
OFF. Removes single-needle
pointer from the EHSI.
Description. The EADI (fig. 3-9), combines a
sphere-type attitude display with lateral and vertical
required to intercept and maintain a desired flightpath.
The EADI provides the following display information:
Flight director command cue
Flight director mode annunciations
Radio altitude with rising runway display
Decision height setting and annunciations
Marker beacon annunciations
Air data command
Rate of turn
EADI Controls, Indicators, and Functions
selected attitude source will be displayed on the EADI if
it is other than the normal source for that instrument.
Possible annunciations are ATT1 (vertical gyro # 1),
ATT2 (vertical gyro # 2), or ATT3 (inertial navigation
system). As other attitude sources are selected, they
will be annunciated in white. When the pilot's and
copilot's attitude sources are the same, the annunciation
will be amber.
Lateral mode capture annunciator. Flight
director mode capture is annunciated on the EADI in
green. Possible annunciations are approach (APR),
localizer (LOC), long-range navigation (LNAV), heading
(HDG), and navigation (NAV).
Attitude sphere. The attitude sphere
moves with respect to the symbolic aircraft reference to
display pitch and roll attitude.
Roll attitude pointer. Roll attitude pointer
indicates aircraft roll attitude with respect to the roll
Roll attitude scale. The roll attitude scale
indicates aircraft bank angle in degrees with respect to a
Vertical mode arm annunciator. Flight
director vertical mode arming is annunciated on the
EADI in white. Possible annunciations are altitude select
(ASEL) and glideslope (GS).
Vertical mode capture annunciator. Flight
director vertical mode capture is annunciated on the
EADI in green. Possible annunciations are glideslope
(GS), vertical speed (VS), indicated airspeed (IAS),
altitude (ALT), and go-around (GA).
Pitch attitude scale. The pitch attitude
scale has white reference marks in 5 degree increments.
Horizon line. The horizon line is affixed to
the sphere and remains parallel to the earth's surface.