The purpose of this step is selection of appropriate maintenance type (types) for each failure cause, taking into consideration failure effect category (FEC) and other factors. MSG-3 document provides maintenance type selection guidelines for each FEC. The current MSG-3 step provides decision-making diagrams for selecting appropriate maintenance type.
| 1. | Select top element or highest manageable MSI item in the product tree. | 
| 2. | Choose "5-Task Selection" MSG-3 step in the button bar. | 
| 3. | List of failure causes will appear (only maintenance-significant items effects will appear): | 

| 4. | For each failure cause in the list, perform the following steps: | 
| a. | Press "Task Requirements Analysis" button (or double-click on the effect). | 
| b. | Decision diagram will appear. Select appropriate "Yes" or "No" answers for each question by clicking yellow boxes with answers: | 

Selected answers are marked by green background color.
Decision diagram is different for each failure effect category.
| d. | Press "Task Definition" button. | 
| e. | Remarks/Tasks dialog will appear – provide remarks on your decision and enter details of scheduled maintenance tasks to the table in the lower part of the screen: | 

| 5. | After decision for all items is taken, the items list will display the results. | 
| 6. | Press Ok to close the failure effects list. |