ACMS -ACMF FUNCTIONAL DESCRIPTION
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Satellite communications system (SATCOM)
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VHF communication system.
The QARF controls the interface to the quick access recorder.
The CMCF records and shows the status of ACMS components. It also lets you load this software:
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The ACMF AMI
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The AIMS OPC
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The ACMF OPS.
Training Information Point
When you load a new OPS or AMI, the ACMS data that is stored in the CPM/ACMF memory goes away. If you need data for a report, be sure that you download the data to the flight compartment printer or to a diskette before you load the new OPS or AMI. When you load an OPC, the ACMS data that is stored in the CPM/ACMF memory does not go away.
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777 AIRCRAFT MAINTENANCE MANUAL
ACMS -ACMF FUNCTIONAL DESCRIPTION
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ACMS -AIRLINE MODIFIABLE INFORMATION
General
The design of the 777 airplane lets the airlines customize certain functions in the airplane condition monitoring system (ACMS). You customize these functions through airline modifiable information (AMI). You use the ground based software tool (GBST) to make the modifications.
The ACMS system comes with a baseline AMI. This baseline AMI provides functionality to meet most airline requirements. The baseline AMI for the ACMS system has these types of reports and controls:
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Engine
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Airplane
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APU
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Environmental control system (ECS)
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Other report controls.
You use the GBST to modify:
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Report features
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ACMF features on the MAT
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Onboard parameter databases.
Engine Reports
The engine stable report collects data during stable cruise periods. It has these submenu items:
* REPORT SUMMARY * MANNUALLY ITITIATED.
The engine takeoff report collects key data for EGT parameters and takeoff derate data.
The engine climb report collects EGT data and climb derate data.
The normal engine start report collects key data during engine start. It has these submenu items:
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LEFT ENGINE
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RIGHT ENGINE.
The abnormal engine start report collects historical and real time data when an engine start is aborted or a fault condition occurs in the start sequence. It has these submenu items:
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LEFT ENGINE
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RIGHT ENGINE.
The engine oil monitoring report collects oil quantity during taxi in and taxi out. This report also computes oil consumption for each flight leg and keeps oil consumption information for the last ten flight legs.
The EGT divergence report computes EGT divergence between the left and right engine during stable cruise conditions and generates a report when the divergence exceeds a specified delta value.
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ACMS -AIRLINE MODIFIABLE INFORMATION
The engine data report collects information during engine runup and engine operation. It has these submenu items:
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REPORT SUMMARY
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MANUALLY ITITIATED.
The engine exceedance report collects historical and real time data during engine exceedances. It has these submenu items:
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LIMIT
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HISTORY-LEFT A
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HISTORY-LEFT B
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HISTORY-RIGHT A
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HISTORY-RIGHT B.
Airplane Reports
The airplane performance monitoring report collects airplane and engine data for the Boeing performance group for input into the Boeing supplied airplane performance analysis program. It has these submenu items:
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REPORT SUMMARY
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MANUALLY INITIATED.
APU Reports
The APU report collects airplane, engine, and APU data when an auto shutdown of the APU occurs. It also collects airplane, engine, and APU data at APU start, main engine start, defined duct pressure conditions, and at ECS demand limits. It has these submenu items:
EFFECTIVITY
BEJ ALL
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APU AUTO SHUTDOWN
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APU PERFORMANCE
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ALL APU REPORTS.
ECS Report
The ECS performance report collects airplane, engine, and ECS data at APU start, main engine start, defined duct pressure conditions, and at ECS demand limits.
Other Report Controls
The other reports menu contains these other report controls:
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QAR RECORDING
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ALL REPORTS.
The QAR recording selection shows status of automatic QAR recording. It also lets you manually start the QAR recording.
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