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HONEYWELL Aerospace Electronic Systems Page 16
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Figure 7 Database Design
The Flexible Input Data Base (FIDB) contains a list of all I/O parameters available for all aircraft within a
fleet. The FIDB contains information regarding LRU source, data busses, labels, scaling, and resolution for
each I/O parameter.
The Airline Modifiable Information (AMI) database is generated by the user to customize their AOC
application. AOC screen and print formats, message definitions and trigger logic can all be specified in the
AMI. Changes to the AMI only require a dataload operation but no certification activity. This is a significant
change from pervious systems, such as our Mark II CMU and competitors CMUs, which still maintain much
of this processing within an AOC software segment. With the Mark III CMU, all such functionality is
contained within the AMI, providing airlines significantly more control and flexibility for performing changes,
as requirements change.
The Honeywell Generated Information (HGI) database provides capability similar to the AMI, but for protected
data typically used by ATC applications. Unlike the AMI, HGI changes require certification although no
change to the embedded operational software.
CMU
AOC
HGI AMI
FIDB
GBST