Examples of use of crack initiation
1. The FAA disagreed, arguing that the 24–month period is "considered appropriate in light of the characteristics of crack growth, the probability of crack initiation, and the ability of the operators to integrate the required actions into established maintenance practices." The ATA, on behalf of Delta, argued that the FAA‘s estimate of the amount of hours it will take to do the inspections is significantly lower than the actual hours it would take Delta to inspect the majority of its MD–88s during the compliance period because specially scheduled inspection visits would be required for those planes not already scheduled for heavy maintenance.