Study pillion
2. System selection and definition
3. Functional failure analysis (PPA)
4. Critical item selection
5. Data collection and analysis
6. PMECA
7. Selection of rn~nten~~e actions
8. ~te~in~ion of maintenance intervals
9. Preventive maintenance comparison analysis
10. Treatment of non-critical items
11. Implementation
12. In-service data collection and updating
The various steps are discussed in the following.