How many years are PMS Quarterly schedules kept on file?

The correct answer is that PMS (Planned Maintenance System) Quarterly schedules are kept on file for 2 years. This duration allows for adequate tracking and documentation of maintenance activities performed on equipment and systems, which is essential for accountability and compliance with maintenance standards. Keeping records for this period enables maintenance personnel to reference historical data, assess past maintenance practices, and identify trends that may impact future maintenance schedules. Moreover, it aligns with the need for maintaining documentation that supports safety and operational integrity in naval vessels. Proper record-keeping also facilitates audits and reviews by ensuring that there is a sufficient timeline of maintenance activities for verification purposes.