Long Range Navigation (Lrn) Mode - Honeywell PRIMUS 1000 Pilot's Manual

Long Range Navigation (LRN) Mode

The LRN mode is flown when the pilot selects FMS as the NAV source
on the coupled–side display controller. The LRN procedure is described
in Table 6–2.
Step
1 Couple either flight director to the autopilot with the FD
transfer switch.
2 Select FMS as the navigation source on the display
controller.
3 Using the remote instrument controller, set the heading
bug on the HSI to the intercept heading for the selected
course.
4 Push the NAV button on the mode selector.
Depending on the FMS installed, the integrated avionics system can
perform the following functions:
D
Automatically arm and capture the FMS–supplied track
D
Immediately capture the FMS–supplied track.
Characteristics common to LRN are described below.
D
Instead of using course error and radio deviation from the symbol
generator, a composite lateral steering command is used from the
FMS navigation computer through the IAC symbol generator.
D
The IAC symbol generator supplies the flight controller with steering
commands.
A28–1146–134
REV 1 Jan/03
LRN Mode Engagement Procedure
Table 6–2
R
PRIMUS 1000 Integrated Avionics System
Procedure
Modes of Operation
6-11