SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
2-9
System Description
The radar can also be used for ground mapping. In the ground mapping
mode, prominent landmarks are displayed that the crew can use to
identify coastline, hilly or mountainous regions, cities, or large
structures. The reflected signals from various ground surfaces are
displayed as magenta, yellow,orcyan (most to least reflective).
Areas of detected turbulence are displayed in soft white.
LASEREF
R
II/III INERTIAL REFERENCE SYSTEM (IRS)
The IRS consists of the following components:
D Inertial reference units (2 or 3)
D Mode select unit (prior to Serial No. 5087)
D Inertial system display unit (prior to Serial No. 5087)
D LASERTRAKr Navigation Display Unit (NDU) (Serial No. 5087 and
later).
NOTE: A third IRS is installed in some aircraft. If this is the case,
the pilot has access to IRS No. 1 or No. 3; the copilot has
access to IRS No, 2 or No. 3.
A brief operational description of the IRS is given in Appendix A.
The IRS is an all--attitude inertial sensor system that outputs the
following information to the EADI and EHSI displays, DIFCS, weather
radar antenna, FMS, and other aircraft systems and instruments:
D Aircraft attitude
D Heading
D Dynamic flight information.
In aircraft with the LASERTRAKr NDU installed, the navigation data
can be selected for display on the EHSI.
LASERTRAK
r
rr
r
Switch (Serial No. 5087 an d Later)
This cockpit--mounted switch selects either the FMS1, LTRK, or FMS2
to supply navigation data to the EHSI through the display controller
FMS button.
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