Defining Modifications—Exercises

Main Exercise

Purpose: The purpose of this lesson is to learn how to register and do modification planning.

Create Modification Program - Wheel Axle

Purpose: The purpose of this exercise is to plan a modification of your Nose Landing Gear. A manufacturer Bulletin (With ID nNEWAXL) says that due to corrosion problems, an improved revision 1 of the Wheel Axle should replace the present * revision. For your part revision this modification is mandatory and has to be completed within 600 FHR or at latest 6 months from now.

You require 1 week task forewarning, and the modification requires one day in workshop. After modification, there should be one post-check at 50 FHR after the modification. This post check takes 1.5 hours and should have a 2 days forewarning. To do the modification you need the new Axle and a 200 tons jack.
This modification should be carried out on all X747-900, rev n serials between nX50000 and nX50010.

Windows:
Define Modification
Modification Details
Instruction

  1. Open the Define Modification window.
  2. Create a new record (F5) and specify your Mod Code nNEWAXL - New axle revision and Revision 1. 
  3. Click the Definition tab. Specify Category to Mandatory, Assignment Type to By Serial Range, your Workshop Code nLAX-C, Mod Type XBULL and a Level Code.
  4. Enter Days Forewarning, Duration Workshop and Rescission Date according to the information described above. Select the Allow Quick Reporting check box.
  5. Optionally, you can enter additional information on the modification in the Information field. When a task is created for the modification, this information will be transferred to the Task Remark field of the corresponding task record on the maintenance order.
  6. Save the information (F12).
  7. Click the Assign Parts tab and specify your Part Number X747-900.
  8. Save the information (F12).
  9. Click the Assign Part Revisions tab, specify your Revision n (if not already present) and save (F12).
  10. Click the Serial Range tab and specify Serial Number Range nX50000..nX50010 for Part Number X747-900. 
  11. Save the information (F12).
  12. Click the Define Post Maint tab and select the Enable Post Maintenance Check check box. Specify Days Forewarning 2, Interval 50 FHR and Interval Limit 50 FHR.
  13. Optionally, you can enter additional information on the post maintenance check for the modification in the Task Remark field. When a PMC task is created, this information will be transferred to the Task Remark field of the corresponding task record on the maintenance order.
  14. Save the information (F12).
  15. Next you have to refer to the Instruction that you have already defined.
  16. Open the Instruction window (not the Instructions tab on Modification Details window). 
  17. Query (F3) for your Operation Number n032901. Click the Modification tab, create new record (F5) and specify your Mod Code with Connection Type Terminating Action and the Mod Rev you specified earlier.
  18. Save the information (F12).
  19. Right-click on the Define Modification window header and then click Modification Details.
  20. Click the Instructions tab and select the Terminating Action connection type. The link to the operation should have been established.
  21. Click the Execution tab and click on the Terminating Action sub tab and specify the 600 FHR deadline for the modification. Save.
  22. Activate the modification by navigating to the Define Modification window by right-click on the window header and then click Define Modification. After this right-click and then click Status and Set Active.