Which maintenance tasks earn their place?
Challenge one task against the failure it is meant to prevent. Keep obligations and effectiveness ahead of the maintenance policy.
How to use the review routes
This is a first-pass challenge of a task, not a complete reliability-centred maintenance analysis. Required protections and uncertain obligations take priority. Task effectiveness is checked before any policy route. Unknown failure consequences or technical evidence lead to investigation, not a keep / stop instruction.
Age-related failures can support reviewing scheduled work. An actionable warning can support reviewing condition-based work. The actual task, interval and change need a competent engineering decision that considers consequence, intervention risk, downtime and cost. This tool never authorises removing a task.
The distinction between applicable and effective maintenance, failure consequences and age-related behaviour is grounded in the NASA Reliability-Centred Maintenance Guide. This simplified review does not claim to implement the full guide.
Move from a task list to an evidence-led decision.
SIGNAL investigates the operational causes and economics behind the work, with experienced service leaders accountable for the conclusions.