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SERVOS circuit breaker is located in the FLIGHT group of the pilot’s
circuit breaker panel.
CAS Color Description
AP AIL MISTRIM Amber Autopilot is engaged and autopilot aileron
servo is holding excessive torque. Disengage
autopilot.
AP ELEV MISTRIM Amber Autopilot is engaged and autopilot elevator
servo is holding excessive torque. Disengage
autopilot.
AP ELEV MISTRIM White Autopilot is engaged and autopilot elevator
servo is holding torque. Disengage autopilot.
Pilot’s Manual
PM-132A 5-73
GO-AROUND (GA) BUTTON
The GA button is located on the outboard side of the left thrust lever.
Selection of the GA button disconnects the autopilot (but not the yaw
damper) and cancels all other vertical and lateral modes except automatic
altitude preselect arm. The flight director provides a wings level
command bar display in the lateral axis and a fixed pitch-up vertical
command. The pitch command does not guarantee that the go-around
airspeed will be achieved. If used on takeoff, the pitch attitude will not
guarantee achieving the V2.
FLIGHT MANAGEMENT SYSTEM (FMS)
The UNS-1E is a fully integrated Flight Management System (FMS).
The FMS provides centralized navigation sensor control, flight planning,
lateral and vertical flight guidance, steering enroute, terminal and
approach modes of operation. Database management, fuel management,
and maintenance functions are also provided by the FMS.
The UNS-1E accepts position information from up to five long-range
navigation sensors as well as DME, VOR, or TACAN sensors. The data
from these sensors is used to determine the best computed position.
The UNS-1E incorporates an internal GPS sensor with Receiver Autonomous
Integrity Monitoring (RAIM) as a standard part of the FMS configuration.
The FMS interfaces with the IC-600s for a transfer of
information to the FMS and lateral and vertical steering commands
back to the EFIS and FD/AP.
If a single FMS is installed, it can receive ADC, AHRS, EFIS, and AP
data from either IC-600 but will use the #1 IC-600 as the primary source.
If dual FMSes are installed, FMS 1 will use the #1 IC-600 as the primary
source and FMS 2 will use #2 IC-600 as its primary source. With dual
FMS installation, the pilots can use either FMS as the navigation source
on their PFDs/MFD. In the material that follows, the FMS unit will be
referred to as the Control Display Unit (CDU). The CDU contains a color,
flat panel display, ten Line Select Keys (LSK) and dedicated function
keys.
The FMS is powered from the left essential bus by a 5-amp circuit
breaker labeled FMS located on the pilot’s circuit breaker panel (AVIONICS
[NAVIGATION] group).
Pilot’s Manual
5-74 PM-132A
CONTROL DISPLAY UNIT (CDU)
The CDU (Figure 5-19) is the primary interface to the pilot. It provides
keypad input for selection of NAV modes and entering of waypoints
and a display to indicate current operational modes. The CDU contains
all the componets required for the FMS functions. Other functions that
are provided include:
• Radio tuning and RMU interface — The CDU allows
remote tuning of the VHF COMM, VOR/ILS, ADF and
ATC radios.
• Flight planning — The CDU can store a fixed number of
flight plans into the FMS database.
ENTER
DIM
MSG
FUEL NEXT
NAV 3
FPL PERF
DTO
TUNE
L ST
MENU 6
2
5
K L
4
D E F
1
Q R
J
P
0
7 8 9
W X
BACK
U V
H N
B C
I
O T
A G
M
S
Y Z
ON OFF
DATA VNAV PREV
UNS-1E FMS CDU
Figure 5-19
Pilot’s Manual
PM-132A 5-75
DATA TRANSFER UNIT (DTU)
The DTU allows updating of the FMS database, storing of pilot data
and can also be used to record flight data. Database updates can be
obtained on a subscription basis. The data transfer unit is a drive (e.g.
3.5-inch floppy or zip disk) designed for mounting in the aircraft.
CONFIGURATION MODULE
The configuration module is used to store configuration data that is
specific to the aircraft in which the FMS is installed.
At start-up, the CDU checks the version number stored in FMS memory
against the version number stored in the configuration module. Any
discrepancy between version numbers results in an FMS message,
CONFIG UPDATE REQUIRED on the CDU.
FMS FUNCTIONS
FLP (flight plan) — Before using the FMS for navigation, an active
flight plan must be defined within the FMS. The operator may select a
previously stored route or create a new one to load as the active flight
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