gression of smart prompts similar to those
used on departure may be utilized to input a
STAR, the approach and landing runway.
Fuel
Before takeoff, input from the fuel quantity
computer provides the FMS with fuel quan-
tity on-board. The pilot must accept or change
the transmitted fuel quantity on the CDU fuel
page. After starting engines, input from fuel
flow sensors provides real time fuel infor-
mation for the computer independent of the
airplane quantity indicating system. Specific
range and endurance are provided along with
fuel, time and distance predictions for the
destination.
PER (Performance)
An optional performance program in the FMS
can compute takeoff speeds, takeoff distance
and landing speed. The operator enters perti-
nent data such as takeoff configuration and en-
v i r o n m e n t a l c o n d i t i o n s t h r o u g h m e n u
selections. VSpeeds and balance field data is
calculated and displayed. For landing, Vref is
calculated along with approach speeds for dif-
ferent flap settings.
NAV (Navigation)
All pertinent enroute navigation data is dis-
played on the first NAV page of the CDU.
DTO (Direct TO)
A dedicated function key can be used to nav-
igate 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-de-
scent, target vertical speed and vertical di-
rect-to are included.
Holding Patterns
The holding pattern definition page provides
a graphic depiction of the holding pattern.
The pattern is defined with some crew input,
and when the ACTIVATE line select key is
pressed, the airplane 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. The holding pattern can also
be programmed and armed to enter holding at
a designated waypoint.
Approach Mode
Once near the destination, the appropriate
approach for the active runway can be linked
to the flight plan. FMS approaches can be
made using published procedures for stand
alone GPS, GPS-overlay (VOR/DME, VOR
and NDB), RNAV, LOC, BC, VOR/DME and
VOR approaches. ILS data based approaches
are advisory only. With FMS selected as the
nav source on the PFD and the FD APP mode
selected, the lateral and vertical steering sig-
nal will be provided by the FMS.
Tune
All communications and navigation frequen-
cies and transponder codes can be set through
the TUNE function of the FMS. An active,
and up to four preselects, can be stored for each
radio. VOR and ADF frequencies can be tuned
by navaid identifier.
DATA BASE
The data base can be worldwide coverage or
regional coverage depending on the operator
needs. The data is updated every twenty eight
days. The airplane is equipped with a data
transfer unit (DTU) which is used to load the
data into the FMS. The DTU can also be used
to download and upload route information.
L E A R J E T 4 5
P I L O T T R A I N I N G M A N U A L
16-92
FOR TRAINING PURPOSES ONLY
FlightSafety
international