Define Instruction

Explanation

This activity is used to define instructions (operations) that can be used on task types, i.e., interval maintenance, modifications, condition limits, faults, life limits and post maintenance checks.

There can be one or more revisions of a certain instruction. Each instruction revision will contain information on the operations that are to be performed when serials with the defined part revision are to be maintained. What, where and the workload of the operations is defined here. Material needs, required tools and facilities, zones, sign off requirements, the criticality of the operation, condition measurements to be performed, task codes the operation is to be included in and subtasks should be specified. Maintenance codes are registered on the maintenance plan to provide the frequency of the performed maintenance. At creation, the instruction revision will automatically receive the Preliminary status. When the instruction revision is in this status (or in the Active status) it will be possible to connect the instruction to task codes, such as, maintenance codes, condition limits, modification codes, fault functions, and post maintenance check IDs. Note that only instructions in the Active status will be transferred to work orders in IFS/Work Order Management when tasks are distributed. The status of the instruction revision can be changed to Active or Obsolete depending on your requirements. This information is shown in point form in the following table:

 Each operation is defined for the specific part revision, e.g., aircraft engine or train, on which the operation is applied. The affected part revision in the structure on which work is to be performed, for instance, a pump in the aircraft engine or a wheel on the train, must be indicated. You must also indicate where in the function structure the work is to be performed. If the work is to be performed directly on the part revision (aircraft engine/train), the affected part revision must be the same as the part revision.

The number of required levels in the function breakdown is managed by object property settings. For serial parts, the valid object property is FUNCTION_LEVEL_INSTR. For vehicle parts it is FUNC_LEVEL_INSTR_VEH. Legal values for these settings will be 0, 1,2 and 3. Object properties can be found in Configuration Basic Data/Object Property and System Definition/Object Property.

The work to be performed must be registered by entering the required competence of the personnel that will perform the work, the number of persons required, and the planned hour consumption for each person. The work description describes in detail the work to be performed.

For each operation, you must specify where the work is performed by registering one of the following field combinations:

• Template Part No, Template Part Rev, and Structure Position indicates that the operation is performed on the specific structure position, regardless of what is installed in the position. The List of Values displays the possible combinations that exist in the structure of the part number and revision that are entered on the Instruction.
• Affected Part No and Affected Part Rev indicates that the operation is performed on that part number/revision combination in all places in the structure where the combination exists. The List of Values displays the possible combinations that exist in the structure of the part number and revision that are entered on the Instruction.
• Template Part No, Template Part Rev, Structure Position, Affected Part No, and Affected Part Rev indicates that the operation is performed on that specific structure position if the specific part number and revision is installed in the structure position. The List of Values for the Template Part No, Template Part Rev, and Structure Position fields displays the possible combinations that exist in the structure of the part number and revision that are entered on the Instruction. The List of Values for the Affected Part No and Affected Part Rev fields displays the possible combinations that can be installed in the given structure position (including prime part, template alternates and position alternates).

When registering a new revision of a part that requires new maintenance instructions, it is possible to copy the instructions from a previous part revision and then make changes to the instructions for the new part revision. It is also possible to copy between revisions of different part numbers to reuse the instructions on parts with the same maintenance needs.

When the workshop receives a maintenance assignment with a distribution type of Work Order, the instructions for the part revision will be transferred to the work order.

To support the need of documentation for accomplished maintenance when the maintenance instructions change, all changes are logged (new registration, edits and deletes) on the instruction operations, material list, criticality, and maintenance codes. When there are registrations the History button on the toolbar is enabled.

Prerequisites

• A valid part revision must exist.
• Competences must have been defined.

The following prerequisites depend on the values you will enter on the instruction revision:

• When defining operations, the template structure of the material together with its product, model and function structure must be defined.
• Instruction types must be defined.
• Instruction locations must be defined.
• Instruction strategies must be defined.

System Effects

• The instruction (operation) is defined. Revision handling is supported.
• Materials, tools/facilities, zones, sign off requirements, criticality and condition measurements can be entered on the instruction (operation).
• The instruction (operation) can be connected to different task types.
• Subtasks can be connected to the instruction (operation) revision.

Window

Instruction
Instructions per Maintenance Code
Modification Details
Condition Monitoring Program
Instructions per Fault Function
Serial Part Revision
Post Maintenance Check Definition

Related Window Descriptions

Instruction
Instruction/Operations
Instructions per Maintenance Code
Instructions per Maintenance Code/Operations
Modification Details
Modification Details/Instructions
Modification Details/Instructions/Operations
Condition Monitoring Program
Condition Monitoring Program/Instructions
Condition Monitoring Program/Instructions/Operations
Instructions per Fault Function
Instructions per Fault Function/Operations
Serial Part Revision
Serial Part Revision/Life Limit
Serial Part Revision/Life Limit/Operation
Post Maintenance Check Definition
Post Maintenance Check Definition/Instructions
Post Maintenance Check Definition/Instructions/Operations

Procedure

The following steps describe entering values that are required for creating an instruction operation. Note that the requirement for values in the Function Breakdown area is dependent on defined object property settings. A list of the optional values that can be defined on the operation is described below these steps.

1. Open the Instruction window and create a new record (F5).
2. In the Part Number field, enter the part number of the desired part. Use the List of Values to select a valid value.
3. In the Part Rev field, enter the revision of the part by selecting a value from the List of Values.
4. In the Operation No field, enter the operation number. Only numeric values are allowed in this field.
5. In the Revision field, enter the revision of the instruction.
6. In the Description field, enter the description of the instruction.
7. Click the Operation tab.
8. If the part revision for which the instruction is being created is connected to a product model, values for the Product Number and Model Number appear automatically. If not, enter values manually or use the List of Values to select a valid value.
9. The fields Function Number, Sub Function, and Bottom Function describe where in the function structure the work should be performed. The function structure is defined for the product model.
10. In the Competence field, enter the required competence. Use the List of Values to select a valid value.
11. In the Hour Cons field, enter the hour consumption.
12. In the No of Pers field, enter the number of persons required to perform the operation.
13. In the Work Description field, enter a description of the work to be done on the operation.

Optional fields:

1. In the Type field, enter the type of operation. Use the List of Values to select a valid value.
2. In the Location field, enter the location on the serial where the work should be performed. Use the List of Values to select a valid value.
3. In the Exec Phase field, enter the maintenance phase during which the operation will be performed. Use the List of Values to select a valid value.
4. In the Strategy field, enter the strategy to which this operation belongs. Use the List of Values to select a valid value.
5. If the operation is issued by a manufacturer (or similar), enter the manufacturer's operation number in the Ref Number field.
6. In the Template Part field, enter the template part number and revision (in the adjoining field) of the template to which the affected structure position belongs. Use the List of Values to select a value.
7. If the operation applies to one specific position in the template structure, enter the ID of the position in the Structure Pos field. If a value is entered in this field, values for the Affected Part and Affected Part Revision must be entered.
8. In the Affected Part field, enter the part number and revision (in the adjoining field) of the affected part in the structure of the selected part. Use the List of Values to select a value.

Note: Creating operations for modifications, condition limits, maintenance codes, faults, life limits and post maintenance checks uses a similar procedure, but the Instructions and Operations tabs are accessed from different windows (Modification Details for modifications, Condition Monitoring Program for condition limits, Instructions per Maintenance Code for maintenance codes etc).