System Overview 1-11
module may be replaced with an updated one. This enables an
easy upgrade path for existing aircraft in the field. The hardware
modules have considerable unused processing, memory and
communication bandwidth allowing for maximum functional
expansion without changing the existing hardware. In many
cases, software upgrades may be accomplished without
removing units from the aircraft.
The image below shows the back of an IFD and a close up view
of the LRU blades that slide in.
The basic system consists of a FMS900w control panel, or
“keyboard” (not shown), and two Integrated Flight Displays
(“IFDs”) that are self-contained units with an internal card cage for
LRUs; that means they are built with a number of slots designed
to fit individual component LRUs. These LRUs can slide in and
out of the IFD and include the ADAHRS, the SBAS GPS, the
digital VHF radios, and the I/O interface.
LRU modules as part of an integral chassis
Other variations of the system include single ADAHRS LRUs (vs.
dual ADAHRS) and FMS400 instead of FMS900w.
To Next Page
Loading...
