What is a 'snag list' used for in aviation maintenance?

A 'snag list' serves as a crucial tool in aviation maintenance, specifically designed to document items requiring attention after inspections or during routine operations. This list is essential in ensuring that any discrepancies, faults, or necessary maintenance tasks identified on an aircraft are systematically recorded and prioritized for correction. By maintaining a snag list, maintenance personnel can effectively track issues that may affect safety, compliance, or aircraft performance, ensuring that all identified problems are addressed in a timely manner.

The other choices do not align with the specific purpose of a snag list. Performance metrics focus on how well an aircraft is operating, pilot feedback relates to the experiences and observations of pilots regarding aircraft handling and performance, and documentation of completed maintenance details tasks that have already been finished rather than those that need attention. The snag list thus plays a unique and pivotal role in the ongoing maintenance and safety protocols within aviation operations.