What type of discrepancy is excluded from being documented in the AFTO Form 781A?

The type of discrepancy excluded from being documented in the AFTO Form 781A is related to discrepancies from battle damage. This is because battle damage indicates that the aircraft has sustained it during operational missions in a combat environment, which is often documented separately through different processes because it involves assessments, repairs, and potential follow-ups that differ from routine maintenance tracking.

Other types of discrepancies, such as those arising from routine maintenance, ground crew reports, and those occurring during training exercises, are typically documented using the AFTO Form 781A since they are considered essential for maintaining comprehensive logs and ensuring the readiness and safety of the aircraft. Documenting these allows for accountability and maintenance trend analysis, but battle damage is unique in its reporting and often requires different handling due to the nature of its cause and implications on aircraft readiness.