Section 80 of 103
79. Engineering Event, Event Log and Audit Trail
Stable section ID: S05-CON-015-SECTION-80 · 16 content blocks
An Engineering Event is an identifiable occurrence that creates, changes, confirms, measures, challenges, or terminates an engineering condition, relationship, state, configuration, or lifecycle status.
An Event Log is an ordered record of Engineering Events associated with an identified entity or system.
An Audit Trail is the traceable evidentiary chain showing who or what performed an action, under which authority, using which information, at what time, and with what effect.
An event record may include:
Event ID and type;
timestamp and location;
affected entities;
actor, device, software, or authority;
previous and resulting states;
source data and evidence;
configuration and version;
authorization and digital signature;
uncertainty, exceptions, and outcome.
Where integrity is important, records should be append-only, tamper-evident, authenticated, and time-synchronized.
Corrections shall normally create linked corrective events rather than erase the original record.
An Event Log becomes engineering evidence only when its provenance, completeness, integrity, relevance, and reliability satisfy the applicable evidence requirements.