from the Western Range were not included since available performance records were
incomplete. The results for the four vehicles are combined in Table 11. Table 12 gives
last-occurrence dates by' response mode for each launch vehicle.

         Table 7. Number of Atlas Failures - All Confisrurations (532 Flights)
         Flight               Failure-Res :,onse Mode                  3&4
         Phase       1       2       3        4        5     'NA' Tumble
         0           0       0        0       0        0       0        0
         0-1         7       1        2      38        8       4       11
         0-2         7       1        2      66       15      13       19
         0-3         7       1        2      86       15      18       25
         0-4         7       1        2      89       15      21       27
         0-5         7       1        2      89       15      23       27

         Table 8. Number of Delta Failures - All Configurations (232 Flights)
         Flight               Failure-Res oonse Mode                  3&4
         Phase       1       2       3        4       5     'NA' Tumble
         0           0       0        0        0      0       0        0
         0-1         0       0        0       ·2      2       5        0
         0-2         0       0        0        4      2      10        1
         0-3         0       0        0        7      3      12        1
         0-4         0       0        0        7      3      13        1
         0-5         0       0        0        7      3      15        1

         Table 9. Number of Titan Failures - All Configurations (337 Flights)
         Flight               Failure-Res oonse Mode                  3&4
         Phase       1       2       3         4      5     'NA' Tumble
         0           0       0        0        3      0       0        1
         0-1         2       2        0       13       1      0        5
         0-2         2       2        0      39       5       3       10
         0-3         2       2        0      46       5       5       11
         0-4         2       2        0      47       5       7       11
         0-5         2       2        0      47       5      10       11

            Table 10. Number of Eastern-Range Thor Failures (85 Flights)
         Flight              Failure-Res oonse Mode                 3&4
         Phase        1     2        3       4     5      'NA' Tumble
         0            0      0       0       0      0        0       0
         0-1          4      1       1      15      4        1       3
         0-2          4      1       1     20       5        3       3
         0-3          4      1       1     22       5        3       3
         0-4          4      1       1     22       5        4       3
         0-5          4      1       1      22      5        5       3


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