APU Monthly Reliability Report
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This report displays APU-related information for a reliability fleet.
The months for which information is displayed is based on the Analysis Period attribute in the Set Options activity. For example, the March 2008 report with the Analysis Period set to ‘12’ would show data beginning April, 2007 to March, 2008.
Report input: You must select the month and year and, the reliability fleet for the report in the Generate Reliability Report page. For further information, see the “Generate Reliability Report” topic.
Report output: This report is an Excel sheet and consists of a single work sheet- APU Monthly Reliability Report.
The worksheet includes,
A summary table of total APU hours, scheduled APU removals, unscheduled APU removals, removal rates and other details. See Retrieval of APU hours.
A graph depicting the APU removal rates, both scheduled and unscheduled for each month .
You can see the following month-wise consolidated information for a reliability fleet in the summary table
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Monthly Total Accumulated APU Hours of the Fleet |
The sum total of APU hours of all aircraft in the fleet. |
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12 Months Running Average of Monthly APU Hours |
The average of APU hours for the previous 12 months of all the aircraft in the fleet . |
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Monthly Number of Scheduled APU Removals |
The sum total of scheduled removals of APU components from all aircraft in the fleet. |
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Monthly Scheduled APU Removal Rate |
The ratio of Monthly Number of Scheduled APU Removals to Total Accumulated Monthly APU Hours of the fleet. |
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12 Months Running Monthly Scheduled APU Removal Rate |
The average of the Monthly Scheduled APU Removal Rate for the previous 12 months. |
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Monthly Number of Unscheduled APU Removals |
The sum total of unscheduled removals of APU components from all aircraft in the fleet. |
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Monthly Unscheduled APU Removal Rate |
The ratio of Monthly Number of Unscheduled APU Removals and Monthly Total Accumulated APU Hours of the fleet. |
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12 Months Running Monthly Unscheduled APU Removal Rate |
The average of the Monthly Unscheduled APU Removal Rate for the previous 12 months. |
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Monthly Number of APU Removals (Scheduled and Unscheduled) |
The sum of Monthly Number of Scheduled APU Removals and Monthly Number of Unscheduled APU Removals. |
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Total Removals |
The sum of removals of all types, namely Scheduled, Unscheduled and Others. |
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Monthly Number of Shop Visits |
The total count of shop visits of all APU components for all aircraft of the reliability fleet |
The details of the graph,
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X-Axis |
Months |
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Y-Axis |
Line graphs depict the following, § Monthly scheduled removal rate § 12-month running average scheduled APU removal rate § Monthly unscheduled removal rate § 12-month running average unscheduled APU removal rate |
Aircraft must be mapped to the reliability fleet in the “Associate Aircraft to Fleet” page of the Setup Reliability Fleet in the Reliability Analysis component.
The APU hours for the report is retrieved from the Component Record business component.
The report generates this information for all aircraft mapped to the reliability fleet during the month of the report and/or during the previous months. This implies aircraft not attached to the reliability fleet during the month of the report but mapped during the previous months are also considered for reliability analysis.
Aircraft remain attached to the fleet during the period between the Effective From and Effective To dates specified in the “Associate Aircraft to Fleet” page of the Setup Reliability Fleet in the Reliability Analysis component.