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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-132A
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. 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-132A 5-77
WEATHER RADAR
The Primus 660 is the standard radar installed in the Learjet 40. It is an
X-band radar system designed for weather detection and analysis. The
radar can also be used for ground mapping. The WU-660 is an integrated
unit which incorporates the receiver, transmitter and antenna (RTA)
into a single unit, located in the nose of the aircraft. The only remaining
radar component is the cockpit control panel which is mounted on the
center pedestal. The antenna is a 12-inch flat plate that is stabilized with
inputs from the #1 AHRS. Weather patterns can be displayed on both
PFDs, on the ARC or MAP format, and on the MFD MAP format. The
radar generates high-level RF pulses and should be operated with caution
while on the ground. When operating on the ground, position the
nose of the airplane so that the antenna scan sector is free of large metallic
objects such as hangers or other aircraft for a distance of at least
100 feet.
The weather radar is controlled from the WC-660 weather radar controller,
Figure 5-20. WX is selected for display on the PFDs by selecting
the WX button on the display controller, the HSI automatically switches
to the ARC mode. WX is selected for display on the MFD MAP by depressing
the WX bezel button on the MFD main menu.
A six-position rotary switch is provided on the radar control panel for
selecting the different radar modes. They are:
• OFF — removes electrical power from the system.
• SBY (standby) — in this position the RTA is powered up but
does not radiate any RF energy nor does the antenna scan.
　
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