TM 1-1510-218-10
3B-37
The method of operation field (selected with the
OBS/LEG key) displays the selected method of
operation. This field normally displays either OBS or
AUTO/LEG.
The selected sensor field displays the sensor
chosen to provide navigation inputs to the system.
The sensor key is used to make the sensor selection.
The following is a list of possible sensor annunciations:
Blend –
System uses position inputs
from all available sensors.
VOR –
VOR and DME.
TACAN –
Tactical air navigation.
ILS –
Instrument
landing
system
(displayed when a localizer
frequency is active).
GPS –
Global Positioning System.
The
mode
of
operation
displays in the mode of
operation
field.
Possible
modes of operation displayed
are:
RNAV ENR –
RNAV en route (± 5 NM full
scale
HSI
deviation
bar
sensitivity).
RNAV APR –
RNAV approach (± 1.25 NM
full scale HSI deviation bar
sensitivity).
NAV –
Navigation (± 10° full scale
HSI deviation bar sensitivity).
(5) Self-Test Page. The self-test page is the
first page of information presented when the unit is
turned on. Following an automatic self-test the status
of the system is displayed as well as a list of
navigation data for the pilot to verify on actual aircraft
instruments and displays.
SYSTEM OK
– Indicates that the unit has
passed the self test.
RMI 130° –
The aircraft's RMI needle
should be pointing to 130°.
DIS 34.3 –
The aircraft's DME display
should be indicating 34.3 NM.
SEL CRS 315° –
The course arrow on the HSI
should be indicating 315°.
HORZ DEV RT 3 –
The deviation bar on the HSI
3 or CDI should be 3 dots to
the right of center (or an
indication of 3 NM to the right
of center).
VNAV DEV UP 3 –
The VNAV indicator should be
displaying
an
up
3-dot
deflection (or an indication of
300 feet below the desired
vertical flight path).
CHECK –
RMI-DIS
CHECK –
CDI-CRS
CHECK –
ANN LTS. The annunciator
lights illuminate to remind the
pilot to check the applicable
data values displayed on the
control display unit with the
actual aircraft instruments.
ORS –
Operation revision status. A
control number that indicates
what
level
of
operational
capabilities are applicable to
the system.
TEST OK? –
Cursor
position
used
to
approve the self-test page.
C 1984 King/
RADIO
– Copyright logo.
(6) Initialization Page. The initialization page
will be displayed after the self-test page is approved.
DATE: –
Greenwich date in the order
of day-month-year. The first
three letters of each month
are
used
for
month
abbreviations.
GMT: –
Greenwich
mean
time
in
hours and minutes. The
correct date and GMT are
retained, even when aircraft
power is removed.
REF NAVAID ID –
The NAVAID (within 50 NM
miles) closest to the systems
last computed position before
power was removed.
WPT ID: –
A data entry field where the
waypoint
identifier
of
the
aircraft's present position may
be entered.
POS: –
The last known computer
generated present position.
EST GS: –
Estimated
groundspeed
manually entered. Should be
