Select this option if the localized pitting region increases either longitudinally or circumferentially. An increase in the local pitting region is similar to an increase in a local thinning area (LTA). Enter the enlargement rates of the pitting region in the Longitudinal [CrateS] and Circumferential [CrateC] fields.
This option is only available when Flaw Type is set to Part 6 (Pitting) and Assessment Level is set to Level 2 Only or Level 1 and Level 2.