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FUEL NEXT
NAV 3
FPL PERF
DTO
TUNE
LIST
MENU 6
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DATA VNAV PREV
UNS-1E FMS CDU
Figure 5-19
Pilot’s Manual
PM-126A 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
plan. A route or active flight plan can be created on the FMS as well.
Once the departure airport is identified, the UNS-1E will present tailored
lists from which the current runway, SID and transition can be selected.
Also, both low and high altitude airways can be accessed for
route or flight plan creation using the LIST function. Routes or the flight
plan may also be constructed waypoint by waypoint, or by combining
stored route segments. When en route and nearing the destination, a
progression of smart prompts similar to those used on departure may
be utilized to input a STAR, the approach and landing runway.
Upon selection of NAV on the MFD (FMS MENU), the IC-600 will display
the closest eight navaids (VORs or NDBs) received from the FMS
on the MFD MAP as background data. Selection of APT on the MFD,
will result in the IC-600 displaying the first four airports received from
the FMS on the MFD MAP as background data.
Pilot’s Manual
5-76 PM-126A
FUEL — Before takeoff, the fuel quantity signal conditioner provides
the FMS with fuel quantity on-board. The pilot must accept or change
the transmitted fuel quantity on the CDU fuel page. After engine start,
the FMS receives real time fuel flow information independent of the aircraft
indicating system. APU fuel is not included in fuel flow. Specific
range and endurance are provided along with fuel, time and distance
predictions for the destination.
PERF (performance) — A performance program in the FMS can compute
takeoff speeds, takeoff N1 , takeoff distance and landing speed.
The operator enters pertinent data such as takeoff configuration and
environmental conditions mostly through menu selections. V Speeds
and balanced field data is calculated and displayed. For landing, Vref
is calculated along with approach speeds for different flap settings.
NAV (navigation) — All pertinent en route navigation data is displayed
on the first NAV page of the CDU. This page along with the
PFD/MFD displays provide complete integrated real time information
on flight progress.
DTO (direct to) — A dedicated function key can be used to navigate
from present position directly to any point on or off the present flight
plan.
VNAV (vertical navigation) — Vertical navigation pages allow the operator
to define waypoints with altitudes or flight levels. Features such
as computed top-of-descent, target vertical speed and vertical direct-to
are included. The FMS outputs vertical commands to the flight director
when selected.
HOLDING PATTERNS — Holding patterns may be programmed at
any waypoint on or off the flight plan or stored in the navigation data
base as part of a SID, STAR or approach procedure. The holding pattern
page provides a graphic depiction of the holding pattern. The pattern
is defined with some crew inputs, and when the ACTIVATE line select
key is pressed, the aircraft will proceed from its present position directly
to the fix and make the appropriate entry (direct, parallel or teardrop),
all automatically calculated and flown by the FMS.
Pilot’s Manual
PM-126A 5-77
WEATHER RADAR
The Primus 650 is the standard radar installed in the Learjet 45. It is an
X-band radar system designed for weather detection and analysis. The
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