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Isolation Probabilities Using Lambda Search

 
Isolation Probabilities Using Lambda Search refers to two columns that appear in the Fault Group Size Percentages section of the Fault Isolation Report. These columns (% and Cum %) provide numbers that describe the expected number of serial item replacements needed to repair a fault isolated by the diagnostic sequence in the current diagnostic study. These probability-weighted Test limits (which are based on the assumtion that the system will be maintained using Lambda Search as the method of prioritizing Serial Replacement) reflect the expected frequency that a diagnosed fault in a fielded system can be repaired with various numbers of item replacements.
 
Multiple Failure
Fault Group Size Statistics
 
Isolation Percentages
Using Testing Only
Isolation Probabilities
Using Testing Only
Isolation Probabilities
Using Lambda Search
Size
Qty
%
Cum %
%
Cum %
      %
1
1
25.00
25.00
12.50
12.50
62.50
62.50
2
1
25.00
50.00
18.75
13.25
25.00
87.50
3
1
25.00
75.00
21.88
53.13
4.38
96.88
4
1
25.00
100.00
46.87
100.00
3.13
100.00
 
You can obtain detailed descriptions of individual columns and metrics in this section of the report by clicking on the corresponding links in the example above, or by clicking on one of the following links: