TM 1-1510-225-10
3A-32
(c) SR Mode Annunciator. The SR
mode annunciator illuminates green to indicate that
soft ride mode has been selected on the autopilot
controller.
(d) HB Mode Annunciator. The HB
mode annunciator illuminates green to indicate that
half bank mode has been selected on the autopilot
controller.
(e) CWS Mode Annunciator. The CWS
mode annunciator illuminates green to indicate that the
control wheel steering switch on a control wheel is
being held pressed, allowing the aircraft to be
maneuvered with the autopilot servos disengaged
allowing the pilot to synchronize flight director
commands in pitch and roll.
(2) Autopilot/Flight Director Lateral Mode
Annunciators. The autopilot/flight director lateral mode
annunciators are located on the upper portion of the
EADI to the right of the autopilot/yaw damper
annunciators.
(a) HDG Mode Annunciator. Illumination
of the heading mode annunciator, placarded HDG,
indicates that the heading mode has been selected
and is engaged.
(b) NAV
(Arm)
Mode
Annunciator.
Illumination of the white navigation arm mode
annunciator, placarded NAV, indicates that navigation
mode on the flight director mode selector panel has
been selected and is in an armed condition.
(c) NAV Mode Annunciator. Illumination
of the green navigation mode annunciator, placarded
NAV, indicates that navigation mode on the flight
director mode selector panel has been selected and is
engaged.
(d) LOC
(Arm)
Mode
Annunciator.
Illumination of the white localizer mode annunciator,
placarded LOC, indicates that the localizer mode on
the flight director mode selector panel has been
selected and is in an armed condition.
(e) LOC Mode Annunciator. Illumination
of the green localizer mode annunciator, placarded
LOC, indicates that the localizer mode on the flight
director mode selector panel has been selected and is
engaged.
(f) APR
(Arm)
Mode
Annunciator.
Illumination
of
the
white
approach
arm
mode
annunciator, placarded
APR, indicates that the
approach mode on the flight director mode selector
panel has been selected and is in an armed condition.
(g) APR Mode Annunciator. Illumination
of the green approach mode annunciator, placarded
APR, indicates that the approach mode on the flight
director mode selector panel has been selected and is
engaged.
(h) BC
(Arm)
Mode
Annunciator.
Illumination
of
the
white
back
course
mode
annunciator, placarded BC, indicates that approach
mode on the flight director mode selector panel has
been selected for a back localizer course and is in an
armed condition.
(i) BC Mode Annunciator. Illumination
of
the
green
back
course
mode
annunciator,
placarded BC, indicates that approach mode on the
flight director mode selector panel has been selected
for a back localizer course and is engaged.
(j) ROL Mode Annunciator. Illumination
of the green roll attitude hold mode annunciator,
placarded ROL, indicates that the roll rate command
knob on the autopilot controller has been moved from
its center detent position, engaging the roll attitude
hold mode.
(3) Autopilot Command Data Display. The
following autopilot command reference data may be
displayed in green on the top center of EADI.
Airspeed.
0 to 512 knots in 1 knot
increments
Mach.
1 to 4.096 mach in 0.005 mach
increments
Vertical
speed.
± 20,480 feet per minute in
100-foot
per
minute
increments
Profile.
H – High
N – Normal
L – Low
(4) Autopilot/Flight Director Vertical Mode
Annunciators. The autopilot/flight director vertical
mode annunciators are located on the upper portion of
the EADI to the right of the autopilot command data
display.
(a) ALT Mode Annunciator. Illumination
of the green altitude hold mode annunciator, placarded
ALT, indicates that the altitude hold mode on the flight
director mode selector panel has been selected and is
engaged.
(b) VS Mode Annunciator. Illumination
of the green vertical speed mode annunciator,
placarded VS, indicates that the vertical speed mode
