The Maintenance Scheduling system for the NWS is inefficient. We use a "compounding schedule" system that creates much more work than is actually needed. We should switch to a "sliding schedule" where the next scheduled task's date is based on the actual task completion dates rather than based on an unchanging calendar schedule. It's kinda like when you change your oil. If you are "scheduled" to change your oil every three months (or 3000 miles), and wait until four months (or 4000 miles) has passed to change it, the next oil change would be due in two months (2000 miles) under a compounding schedule but would be due three months (3000 miles) from the late date under a sliding schedule. Similarly, if you change the oil 1 month early (2000 miles), it would be four months (4000 miles) before you are due to repeat the task under a compounding schedule but three months (3000 miles) from the actual task accomplishm,ent date under a sliding schedule. For a number of reasons, sliding scheduling is way more efficient than compounding scheduling and the NWS is creating either unneccessary work or unneccessarily delayed work under a compounding schedule, whereas a sliding schedule would ensure taska are based on when completed dates and woud reflect actual maintenance needs under a sliding schedule.