TRAX MANUALS > Engineering > Engineering Module - E/C > Engineering E/C, Update Menu > Engineering Control > Engineering Control, Schedule Tab > Part Number Engineering Control Actuals Calculations > P/N E/C Actuals Calculation: Scenario 1

When a Part Number Engineering Control (P/N E/C) has an Effective Date that precedes the P/N being entered into TRAX Inventory, the P/N E/C Actuals will not be affected until the P/N Serial Number is installed into an Aircraft.

Note: Please note the setting and functionality of switch AUTOECPNACTUAL. When set to Yes, the system will automatically update the Actual Hours and Cycles on all P/N S/Ns that are effective to a newly created/added P/N E/C. When set to No, the system will not automatically update the Actual Hours and Cycles on P/N S/Ns that are effective to a newly created/added P/N E/C.

For example, create an Engineering Control with an Effective Date set in the past.

Note: For all of the examples in the following scenarios, the Calendar Days checkbox (previously the P/N E/C Use E/C Effective Date checkbox) is not selected in the Engineering Control, Schedule tab. This checkbox remains unselected because the P/N E/C calculations in these examples are based on P/N Installation time not un-installed time. For more information refer to the Engineering Control, Schedule Tab via the Engineering - E/C Training Manual.

Note: In TRAX Version 12, the Calendar Days checkbox has been removed and replaced with the Calendar Days drop down option.

Apply E/C effectivity to a Part Number via the Engineering Control P/N button.

Note: The Load At Receiving checkbox above must be selected for this scenario to function properly.

The P/N is received into inventory either through a Purchase Order or an Initial P/N Load. The following example provides the P/O method:

Receive the P/O and assign a Serial Number to the P/N.

Note: Users can comply with the E/C when receiving the P/O or initial loading it into inventory. The Reset Date will default to the original blanket schedule (E/C, Schedule tab) Effective Date for the P/N E/C, but the Reset Date should be updated to the latest compliance date once the Complied checkbox is selected.



For more information refer to Associating E/Cs with the Received Part via the Receiving Training Manual.

Once in inventory, users can view the P/N via the Inventory Detail window.

Note: Any P/N Controls that exist for this part (as displayed in the P/N Total Times fields above) will not be affected by the P/N E/C Control.

From the Inventory Detail, E/C tab, users can view the accumulated actuals against the Part Number Engineering Control. Notice that there are no Actuals against the P/N E/C while there is historical time. This is because the P/N was just received into inventory and has not yet been installed onto an aircraft.

P/N E/C Actuals will begin to accumulate once the part is installed on an aircraft. Refer to the following for a detailed example on how P/N E/C Actuals are affected through multiple A/C Installations and Removals.

Via the Inventory Detail, A/C P/N Transaction tab, notice that the P/N S/N was installed on an A/C (304) the same date as the P/N E/C Effective Date.

Several flights were created for the same Aircraft (304) after the P/N Install as viewed from the Technical Records/Print/A/C Logs Print window.

Note: The Technical Records/Update/A/C Actual Flights Closing must be performed for the A/C Total Times to be reflected against the P/N E/C Actuals.

From the Inventory Detail, E/C tab, notice the P/N E/C Actuals are the same as the amount of A/C Total Hours accumulated through the scheduled flights above.

Remove the P/N from the Aircraft.

Once removed from the aircraft, the P/N E/C Actuals are updated via the Engineering Effectivity Override window.

Note: For more information refer to the Override Button, Engineering Effectivity Override via the Engineering - E/C Training Manual.

Install the same P/N Serial Number onto a different Aircraft (303).

Several more flights were created for this different Aircraft (303) after the installation of the P/N as viewed from the Technical Records/Print/A/C Logs Print window.

After the flights are closed through the A/C Actual Flights Closing, the A/C accumulated times for both installations of the part are added together and reflected in the P/N E/C Actuals (see below diagram for calculation).

From the Inventory Detail, E/C tab, notice the P/N E/C Actuals reflect the A/C Total Times for both A/C installations combined.

Note: When the P/N is removed from the Aircraft, the P/N E/C Actuals are updated once again with these new Actuals in the Engineering Effectivity Override window (as previously displayed) and continue to do so until the P/N E/C is reset with either a Repair Order or Work Order compliance.