AIMS -CORE PROCESSOR MODULE/COMMUNICATIONS FUNCTIONAL DESCRIPTION
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AIMS -AIRLINE MODIFIABLE INFORMATION OVERVIEW
General
The airplane information management system (AIMS) must have several types of software loads. These are the types of software:
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Operational program software (OPS) in all CPMs and IOMs
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Operational configuration files (OPC) in all CPMs
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Navigation Data Base (NDB) software for the FMCF function
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Airline modifiable information (AMI) software for related functions.
The design of the 777 airplane gives the option to permit airlines to customize the operation of some of the functions in AIMS.
AMI software supplies this flexibility. Baseline AMI software and default values provides basic functionality for the related AIMS systems.
If you make the decision to modify or customize the basic functionality, you use the ground based software tool (GBST to develop the new AMI. You must have a Sun workstation to operate the software for the GBST.
Baseline AMIs
Baseline AMIs supply an initial level of functionality for several AIMS functions. These are the functions that use baseline AMIs:
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Airplane condition monitoring function (ACMF)
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Flight deck communication function (FDCF)
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Electronic checklist (ECL) portion of the primary display function (PDF)
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Central maintenance computing function (CMCF).
You load baseline AMIs software into the AIMS cabinet from a separate diskette. This software is in addition to the other software for the core processor module (CPM) that has the related function. A new or modified AMI load will replace any existing AMI software for that particular function.
Default Values
Default values also supply an initial level of functionality for several AIMS functions. These are the functions that use default values:
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Data communication management function (DCMF)
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Flight management computer function (FMCF).
Default values are hardcoded (non-modifiable) values found in the operational software of the CPM for the related functions. To cause the function to operate with new values you must develop a customized AMI and load that software into the CPM from a new diskette. These new values do not replace the default values but are used instead of the default values. If the AMI fails, the functions go back to the default values.
Boeing initially installs a null AMI. A null AMI is a blank AMI that causes the related function to use the default values.
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AIMS -AIRLINE MODIFIABLE INFORMATION OVERVIEW
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D633W101-BEJ Jan 05/2002
AIMS -SOFTWARE FUNCTIONAL DESCRIPTION
General
These are the four different types of software in the AIMS cabinet:
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Operational program software (OPS)
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Operational configuration files (OPC)
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Airline modifiable information (AMI)
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Database.
These are the two different types of data stored by the LRMs:
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Bite history data
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Run-time data.
These are the three different types of memory that the LRMs use to store the software and the data:
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Flash which is nonvolatile
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EEPROM which is nonvolatile
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SRAM which is volatile.
Operation Program Software
The OPS is the core software and the application software for the avionic functions. There is a unique software part number for each type of LRM. Modules that are the same, like all the IOMs and the two CPM/GGs, have the same part number.
The OPS is stored in flash memory which is nonvolatile memory. If you remove the module from the cabinet, you do not lose the OPS software. The OPS software can be loaded into the module either in the shop or when it is installed on the airplane.
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