Re-Initialize / Update Parameter Values

Re-initializing / updating parameter values

This page allows you to update and re-initialize initialized parameter values of aircraft or component. Tell me more.

Select the “Re-Initialize / Update Parameter Values” link under the “Aircraft” business component.

The “Re-Initialize / Update Parameter Values” page appears.

The system displays the following:

Date & Time Format

The format in which the date and time fields are displayed. This format is displayed from the "User Preferences" business component based on the login user ID. In case the format is not defined, the system displays the date format from the “Enterprise Modeling” business component by default.

Enter the following in the “Search Criteria” group box:

Maint. Object Type

Use the drop-down list box to specify the type of the maintenance object. The system lists the options Aircraft Reg #, Part # / Serial #, Component #, Aircraft Model #, Att. Aircraft Reg.#, Att. Component #, Nose # and Aircraft Group #.

The system sets this field to “Aircraft Reg#” by default.

Note that wild card search is not supported by this field

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Parameter

The parameter associated with the maintenance object. Note that wild card search is not supported for this field.

The system retrieves all aircraft or components associated with the parameter specified here.

Parameter Type

Use the drop-down list box to select the parameter type. The system lists the options “Consumption”, “Range”, “Attribute” and “Technical”. Leave this field blank if you wish to retrieve maintenance objects irrespective of the parameter type.

Enter the following in the “Default Details” group box:

Update Date & Time

The date and time at which you update the parameter value.

Ensure that the date and the time are earlier than the current date and time.

By default, the system sets the Update Date & Time to the current date and time.

Default Remarks

Any general comments pertaining to update of the parameter value (Alphanumeric, 255). You must enter remarks here, if you do not intend to provide remarks for individual parameters in the “Search Results” multiline.

Click the “Search” pushbutton to display the search results.

Note: The system does not retrieve the aircraft records that are in “Inactive” or “Frozen” status.

The system displays the following fields in the “Search Results” multiline. However, you can also enter new parameter records in the multiline.

Message Center

The success/error message pertaining to the parameter details.

The system displays this message for the records on using the Validate or Update Parameter Values pushbutton. The message in the message center determines the listing of records in the multiline. Those records that have error messages in the message center are displayed first in the order, followed by the records that have success messages. Those records that do not display error messages are inferred to be correct after verification by the system.

Specify the following in the multiline.

Aircraft Reg #

The registration number of the aircraft.

The aircraft you specify must exist in “Active” or “Under Creation” status in the Aircraft component

Note: If the maintenance object type is “Component”, then the system displays the registration number of the aircraft to which the component is attached as on date and time.

Component #

The number identifying the component.

The component you specify must exist in “Active” status in the Aircraft component.

Part #	The part to which the component belongs. The part you specify must exist in “Active” or “Under Creation" status in the Part Administration component. It is also mandatory that you specify the valid serial # for the part. Note
Mfr. Part #	The manufacturer part number of the component for which you are recording parameter values (Alphanumeric, 30). Help facility available
Mfr. Part #	The manufacturer # of the component for which you are recording parameter values (Alphanumeric, 30). The manufacturer you specify must be defined as a supplier of type ‘Manufacturer’ in the Aircraft and Supplier components. The manufacturer number is mandatory, if you enter more than one record with the same manufacturer part # in the multiline. Help facility available
Note
Serial #	The serial number of the part. The serial you specify must be valid for the part as defined in the Stock Maintenance component. Further, the part # and serial # combination must exist in Active status in the Aircraft component.
Note: One of the following three is mandatory: Aircraft Reg #, Component # or Part # and Serial #.
Parameter	The identifier of the parameter. Mandatory. The parameter you specify must be valid for the aircraft, component or part and serial # as defined in the Aircraft component.

Enter the following fields in the “Search Results” multiline:

Since New

The present value of the parameter for the aircraft/component/'part#-serial# (Decimal). Mandatory. You must enter a positive value though the value can be zero. Further, you can specify a fractional value only if the UOM for the parameter allows fraction.

For Range parameters the Since New that you specify must be within the range as defined for the parameter in the Aircraft component. Similarly, for Attribute parameters the Since New value must be valid as defined for the parameter and the aircraft in the Aircraft component.

If the “Parameter Type” is “Attribute”, ensure that the value is a valid attribute value as defined in the “Aircraft” business component.

Help facility available, for parameters of type “Attribute”.

Note: If the “Re-Initialize and Update Parameter Value” page is invoked from “Inspect Parts” screen of the “Goods Inward” business component, the system defaults the ‘Since New’ with the ‘Present Value’ of the component from the “Edit Consumption & Range Parameters” screen for components.

Since Attachment

The cumulative parameter value of the component since its last attachment in the shop (Decimal). You must enter a positive value though the value can be zero. Further, you can specify a fractional value only if the UOM for the parameter allows fraction.

You must leave this field blank, if the maintenance object is Aircraft Reg#. Further, this field is not relevant for parameters of Parameter Type “Attribute”, “Range” and “Technical”.

Note that the Since Attachment value must be less than Since New value.

Since Overhaul

The cumulative parameter value of the component since its last overhaul in the shop (Decimal). You must enter a positive value though the value can be zero. Further, you can specify a fractional value only if the UOM for the parameter allows fraction.

You must leave this field blank, if the maintenance object is Aircraft Reg#. Further, this field is not relevant for parameters of Parameter Type “Attribute”, “Range” and “Technical”.

Note that the Since Overhaul value must be less than Since New value.

This field is mandatory, if you intend to specify Since Repair, Since Insp. and Since Last Shop Visit field.

Since Repair

The cumulative parameter value of the component since its last repair in the shop (Decimal). Ensure that you enter a positive value. You must enter a positive value though the value can be zero. You can also specify a fractional value only if the UOM for the parameter allows fraction.

You must leave this field blank, if the maintenance object is Aircraft Reg#. Further, this field is not relevant for parameters of Parameter Type “Attribute”, “Range” and “Technical”.

Note that the Since Repair value must be less than Since Overhaul value.

This field is mandatory, if you intend to specify Since Insp. and Since Last Shop Visit field.

Since Insp.

The cumulative parameter value of the component since its last inspection in the shop (Decimal). Ensure that you enter a positive value. You must enter a positive value though the value can be zero. Further, you can specify a fractional value only if the UOM for the parameter allows fraction.

You must leave this field blank, if the maintenance object is Aircraft Reg#. Further, this field is not relevant for parameters of Parameter Type “Attribute”, “Range” an “Technical”.

Note that the Since Insp. value must be less than Since Overhaul value.

This field is mandatory, if you intend to specify Since Last Shop Visit field.

Since Last Shop Visit

The cumulative parameters of the aircraft or component since its last visit in the shop. (Decimal). You must enter a positive value though the value can be zero. Further, you can specify a fractional value only if the UOM for the parameter allows fraction.

You must leave this field blank, if the maintenance object is Aircraft Reg#. Further, this field is not relevant for parameters of Parameter Type “Attribute”, “Range” and “Technical”.

Note that the Since Insp. value must be less than Since Overhaul value.

Update Date

The date on which you update the parameter values. It is mandatory to specify this field, if you have not specified the Update Date & time in the “Default Details” group box.

For consumption parameters, if the Update Mode is “Re-initialize”, the update date you specify must be earlier than the re-initialized date. However, if the Update Mode is “New”, the update date must not be earlier than the re-initialized date.

Update Time

The time at which you update the parameter values.

For consumption parameters, if the Update Mode is “Re-initialize”, the update time you specify must be earlier than the previous re-initialized/updated time. However, if the Update Mode is “New”, the update time must not be earlier than re-initialized time.

Remarks

Any general comments pertaining to the parameter value update. If you do not specify remarks, the system sets this field to the remarks in the “Default Remarks” field.

It is mandatory to enter remarks here, if you have not entered remarks for individual parameters in the ““Default Remarks” multiline.

Modify the following field, only if the “Update Option” is set as “Re-Initialize”:

Initial Value Unknown?

Use the drop-down list box to specify whether the “Since New” value is known for the component that is not in “New” condition.

Yes – Select this option, if the “Since New” value is not known.
No – Select this option, if the “Since New” value is known.

The system allows you to modify this field only if the Update Option is “Re-initialize”. The system sets this field to “No” by default, if the parameters are not initialized for the component.

Note: If the parameter type is “Consumption” and “Update Option” is “New”, the “Since New” value must be greater than or equal to the “Since OH”, “Since Repair”, “Since Insp.” and “Since Last Shop Visit” values.

Note: You can enter the “Since OH”, “Since Repair”, “Since Insp.” and “Since Last Shop Visit” values, only when the “Maintenance Object Type” is “Component”, “Parameter Type” is “Consumption” and “Update Option” is “New” or “Re-Initialize”.

The system displays the following fields:

Present Value (Since New)	The value of the parameter at the current date and time since the aircraft/component was inducted into operations.
Present Value (Since Attachment)	The value of the parameter at the current date and time since the component was most recently attached to NHA/aircraft.
Present Value (Since Overhaul)	The value of the parameter at the current date and time since the aircraft/component was most recently overhauled.
Present Value (Since Repair)	The value of the parameter at the current date and time since the aircraft/component was most recently repaired.
Present Value (Since Insp.)	The value of the parameter at the current date and time since the aircraft/component was most recently inspected.
Present Value (Since Last Shop Visit)	The value of the parameter at the current date and time since the aircraft/component was most recently sent for a shop visit.
Initialized Value	The value at which the parameter was initialized when it was inducted into operations.
Initialized Date/ Time	The date and time at which the parameter was initialized to the initialized value.
Position Code	The position code at which the component is attached in the aircraft.
Level Code	The level code at which the component is attached in the aircraft.

NHA	The identification number of the parent component or the aircraft reg #, if the component is attached to the aircraft at the first level.
Parameter Type	The parameter type, which could be “Consumption”, “Range”, “Attribute” or “Technical”.
Parameter Source	The parameter source from which the parameter value must be updated.
Formula #	The formula to be associated with the parameter.
Formula	The contents of the formula entered in the “Formula #” field.

Note: The system retrieves the “Parameter Source”, “Formula #” and “Formula” details from the “Edit Consumption & Range Parameters” page.

Ref. Doc. Type	The type of the reference document associated with the aircraft/component that affected change in parameter values.
Ref. Doc. #	The reference document associated with the aircraft/component that affected change in parameter values.

Specify the following in the “Update Details” group box.

Update Option

Use the drop-down list box to select the mode on which the parameter value has to be updated:

Delta – Select this option to indicate that the new parameter value is to be added with the existing parameter value. If Delta value for a parameter is updated to Aircraft or Component, the value gets inherited to its child components (if exists) if the Parameter Source for the child components is set as “Parent”.
New – Select this option to indicate that the parameter value is to be overwritten by the new parameter value. If new value for a parameter is updated to Aircraft or Component and, if the new value entered is greater than the existing parameter value, the difference in the value gets inherited to its child components (if exists) with Parameter Source as “Parent”.
Re-Initialize – Select this option to indicate that the parameter value must be re-initialized.
Correction – Select this option to indicate that the parameter value must be rectified.

By default, the Update Option is set to “Delta”.

Note that the system automatically resets the present value of the component and its entire hierarchy of child components to the “Since New” that you specify, if the Update Option is “New” or “Delta”. Hence, it does not allow you to enter component records that share parent or child relationship in the multiline. On the contrary, when you have selected “Re-initialize” or “Correction” as the Update Option you can enter parent and child component records at the same time. The system sets the present value of the component to the Since New while the present values of child or parent components are not affected.

If the parameter is mapped to the “Hobbs Meter Reading” base parameter, the only Update Option “New” can only be selected.

Select the “Update Component Condition” link provided below the multiline to update the component condition.
Select the “View Aircraft Parameter History” link provided below the multiline to view the aircraft parameter history.
Select the “View Component Parameter History” link provided below the multiline to view the component parameter history.
Select the “View Component Maint. Program” link provided below the multiline to view the component maintenance program.
Select the “View Aircraft Maint. Program” link provided below the multiline to select aircraft maintenance program for viewing.

To verify and compute the consumption parameter value

Click the “Validate” pushbutton to compute the consumption parameter values.

Note: Ensure that the “Parameter Type” is “Consumption”.

Transferred aircraft: You cannot validate parameter values for aircraft/components attached to aircraft transferred to another operating unit for maintenance. The system allows for value validation upon return of the aircraft.

The system verifies the parameter values specified in the multiline and displays success/error message in the Message Center.

Note: 1) The system does not allow update of parameter values more than once at an update date & time, if the Update Option is “New”, “Correction” or “Delta”. 2) If a parameter is mapped to the “Hobbs Meter Reading” base parameter, the system validates the record only if the flight log associated with the aircraft is in “Fresh” status.

For offline aircraft / components attached to offline aircraft / components available in offline warehouse / component removed and pending for return from offline aircraft, the system does not allow parameter value update in main base (i.e. Usage Mode set as “Online” in Configurator” business component), if the ‘Update Option’ is “Re-initialize” or “New”.

Note: Aircraft is said to be offline if it is located in an offline field base i.e. ‘Mode of Usage’ defined as “Offline” in the “Aircraft” business component. ‘Mode of Usage’ could be “Online” or “Offline” to indicate whether aircraft is located in main base or offline base respectively.

‘Usage Mode’ is a process parameter defined as “Online” or “Offline” in the “Configurator” business component to indicate whether the user operates the system from the main base or offline base to record transactions.

To update the parameter values

Click the “Update Parameter Values” pushbutton to update the parameter values.

Transferred aircraft: You cannot update parameter values for aircraft/components attached aircraft transferred to another operating unit for maintenance. The system allows for parameter update upon return of the aircraft.

The system performs the following:

For the maintenance object ”Aircraft” or ”Component”, if the "Parameter Type" is "Consumption" and the "Update Option" is "New" or "Delta", the system ensures that the newly added record with the current transaction date & time as the "Update Date & Time" does not already exist in the "Parameter History".
For the maintenance object ”Aircraft” or ”Component”, if the “Parameter Type” is “Consumption, “Update Option” is “Re-Initialize” and value is available in the “Update Date & Time” field”, then the system ensures that the “Update Date & Time” for the maintenance object and parameter combination is not later than the previous initialize date & time of the newly accessed record.
The system generates a transaction number for the newly added record using the valid numbering type that has been mapped and set as “Default” to the “Manual Update” transaction in the “Document Numbering Class” business component.
For the maintenance object ”Aircraft” or ”Component”, if the “Update Option” is “New” and the Parameter Type” is “Range”, “Technical” or “Attribute”,. the system updates the newly added record with the current transaction date & time as the “Update Date & Time” in the parameter history.
If the “Update Option” is “Re-Initialize” and “Update Date & Time” field is left blank, the system adds the delta values to the parameter value of the newly accessed record and updates the same as the present value.
If the “Update Option” is “Re-Initialize” and “Update Date & Time” field is entered, the system updates previous initialize date & time with the “Update Date & Time” and adds the delta values existing as of date & time to the parameter value of the newly accessed record and updates the same as the present value.
If the Update Option is “Correction” and “Update Date & Time” field is entered, the system updates the present value for the aircraft/component to the Since New value.
Sets the Next Due of the work unit to Next Schedule Value (NSV), if the Updation Basis is “Time Window” with schedule based on usage. The execution of the work unit can occur within or outside the tolerance limits. For example, if the work unit is next due at 6000FH, repeat fixed / floating interval is 600FH, tolerance limit is +/- 10FH, and the work unit is executed on any parameter value between 5990 FH to 6010 FH (both FH values included). Assuming, the work unit is executed at 6000 FH, the NSV is arrived at 6600 FH (6000 FH + 600 FH). When the execution of the work unit occurs outside the tolerance limits, the NSV is computed using the following logic,

NSV = Work Unit Execution FH + Repeat Interval.

For example, if the work unit is executed at 5989 FH or 6015 FH, the NSV will be 6589 FH or 6615 FH,

Sets the Next Due of the work unit to Next Schedule Date (NSD), if the Updation Basis is “Time Window” and schedule is date based. The execution of the work unit can occur within or outside the tolerance limits. For example, if the work unit is next due on 10/05/07, repeat fixed / floating interval is 20 days, the tolerance limit is +/- 3 days and, the work unit is executed on any date between 07/05/07 to 13/05/07 (both dates included). Assuming the work unit was executed on 10/05/07, the NSD will be 30/05/07. When the work unit is executed outside the tolerance period, the NSD is computed using the following logic,

NSD = Work Unit Execution Date + Repeat Interval.

For example, the NSD for a work unit executed on 05/05/07 or 14/05/07 will be 25/05/07 or 03/06/07.

Ultimately, the system sets the Next Due to NSV or NSD based on the “Sch. Exe. Rule”, which could be “Earliest’ or “Latest” as specified by the user, in the Aircraft Maintenance Program component.

If the ”Since New” parameter value is not known, the system updates the parameter value as follows:

If one of the “Since Overhaul", “Since Repair”, "Since Inspection" or "Since Last Shop Visit" fields is entered, the system updates the “Since New” field with the available parameter value.
If more than one parameter value is entered, the system updates the “Since New” field with the greatest of the available parameter values.

For the newly added record with parameter type as “Consumption” and update option as “New”:

If there is any record with “Update Option” as “New” in the parameter history, with transaction date & time later than the “Update Date & Time”, the system retains the present parameter value.
If there is no record with Update Option as “New” in the parameter history, with transaction date & time greater than the “Update Date & Time”, the system adds the delta values of the records with transaction date later than the “Update Date & Time” from the parameter history to the parameter value of the newly accessed record and updates the same as the present value.

For the newly added record with parameter type as “Consumption” and update option as “Delta”:

If there is any record with “Update Option” as “New” in the parameter history , with transaction date & time later than the “Update Date & Time”, the system retains the present parameter value.
If there is no record with “Update Option” as New in the parameter history , with transaction date & time later than the “Update Date & Time”, the system adds the delta value of the newly accessed record to the present parameter value and updates the same as the present value.

If the “Parameter Type” is “Consumption”, “Update Option” is “New” or “Delta” and if parameter present value is changed for the maintenance object and parameter combination, then the system inherits the delta parameter change to the child components.
If the “Maintenance Object Type” is “Aircraft” and if there are usage based schedules for the work units associated to the aircraft :

If there is change in the present value of the aircraft consumption parameter, and if the compliance date for the specified aircraft and work unit combination is later than the transaction date & time, as defined in the “Aircraft Maintenance Program Compliance History”, then the system calculates the present value as on the compliance date and updates the same as the “Last Performed Value”. If the schedule type is “Recurring” then the system updates the next schedule value based on the updated present value.
For the child components attached to the aircraft as on ‘Update Date & Time’, if the compliance date for the component and work unit combination is later than the transaction date & time, as defined in the “Component Maintenance Program Compliance History”, the system calculates the present value as on the compliance date and updates the same as the “Last Performed Value”. If the schedule type is “Recurring” then the system updates the next schedule value based on the updated present value.

If the “Maintenance Object Type” is “Component” and if there are usage based schedules for the work units associated to the component:

If there is change in the present value of the component consumption parameter, and if the compliance date for the specified component and work unit combination is later than the transaction date & time, as defined in the “Component Maintenance Program Compliance History”, then the system calculates the present value as on the compliance date and updates the same as the “Last Performed Value”. If the schedule type is “Recurring” then the system updates the next schedule value based on the updated present value.
For the child components attached to the component, if the compliance date for the component and work unit combination is later than the transaction date & time, as defined in the “Component Maintenance Program Compliance History”, the system calculates the present value as on the compliance date and updates the same as the “Last Performed Value”. If the schedule type is “Recurring” then the system updates the next schedule value based on the updated present value.

If the parameter value is re-initialized for the Maintenance Object, then update the next schedule value for the work units for which last performed value is not available in the maintenance program, as follows:

If the ”Threshold value” is available for the work units, then the system adds the re-initialized value to the threshold value and updates the same as the next schedule value.
If no ”Threshold value” exists and ”Floating Interval” is available for the work units, then the system adds the re-initialized value to the floating interval and updates the same as the next schedule value.

For offline aircraft / components attached to offline aircraft / components available in offline warehouse / component removed and pending for return from offline aircraft, the system does not allow parameter value update in main base (i.e. Usage Mode set as “Online” in Configurator” business component), if the ‘Update Option’ is “Re-initialize” or “New”.

The system does not allow the user to update the parameter value for the Aircraft / Component with Update Option as “New”, if the process parameter ‘Offline System Applicable?’ is set as “Yes” in the “Set Global Parameters” activity of the “Installation Parameter Setup” business component.

Parameter value update of Formula based parameter

If the parameters of the maintenance object “Aircraft” or “Component” are affected, and if the affected parameters belongs to the formula content of any of the formula based parameter, then the system updates the present value of the formula based parameter based on its Update Option.

For example,

If the affected parameter is P2, which is a part of the formula content “F1 = P2*P3” for the formula based parameter P1. If the update option of the formula based parameter (P1) is set as “New”, then the system updates the present value for the formula based parameter (P1) using the new values of the affected parameters.

If the update option of the formula based parameter (P1) is set as”Delta”, then the system updates the present value for the formula based parameter (P1) using the delta values of the affected parameters.

Re-initializing / updating parameter values – An overview

You can specify the search criteria such as aircraft registration number, aircraft model number, component number, part number, serial number, parent component number, parameter and transaction number, and select the aircraft or component for which the parameter values are to be updated. Based on the maintenance object type, which could be aircraft or component, you can update / re-initialize the initialized parameter values of the aircraft or component.

What you can do in this page

Specify parameter type

You can specify the parameter type, which could be “Consumption”, “Range”, “Technical” or “Attribute”.

Set the “Parameter Type” field to “Consumption”, to compute and update values for consumption parameters.
Set the “Parameter Type” field to “Range”, to compute and update values for range parameters.
Set the “Parameter Type” field to “Technical”, to compute and update values for technical parameters.
Set the “Parameter Type” field to “Attribute”, to compute and update values for attribute parameters.