Within BOPACS target applications will be selected that are commonly used in today's primary aerospace structures and where adhesive bonding might advantageously replace conventional riveting / fastening. Based on these target applications, bolt free adhesive bonded joining methods will be developed which comply with the EASA airworthiness requirements. Contrary to projects focusing on the development of non-destructive techniques for the inspection of weak bonds, BOPACS proposes a rigorous road map to certification by developing Means of Comply based on:

• Thorough research, beyond the state of the art, into the crack growth / Disbond extension mechanisms in adhesively bonded joints
• Design, analysis, testing and assessment of different categories of crack stopping design features, i.e. features that are capable of preventing cracks or Disbonds from growing above a predefined acceptable size, with a joint still capable of carrying the limit load

The project results and certification issues are reviewed on a regular base by EASA representatives through the Airbus certification department.