Main Engine entablature suffered relatively minor damage requiring several crack repairs. These pictures showcase some of the steps taken during Metalock process [Drill through Jig. Rip bridge between drilled holes with sized blades to make apertures ready to accommodate metalocks. Fit Locks and peen. Etc]  Whilst not a major job - location of fractures / size of access doors made repairs more difficult, especially to inside area . [Please note that this description is  a simplified version of this Metalock repair – many small but important steps have been omitted for brevity]