Aviation glossary · Records and evidenceAudit trail
The immutable log of who changed what and when, kept so that a past state of the record can be reconstructed and explained.
Why it matters
The question at an audit is rarely what the value is now. It is who changed it, when, and under what authority — and that has to survive the person leaving.
In AerSynx
Every successful change writes an audit line against the organisation, and authority itself is recorded: who could have done it, and who did. Audit Trail →