Appendix B to point 21L.A.103 Classification of changes to the design of an aircraft for which design compliance has been declared

• ED Decision 2023/013/R found in: Initial Airworthiness and Environmental Protection (748/2012) Part-21 Part-21L (Jul 2024)

Appendix B to point 21L.A.103 Classification of changes to the design of an aircraft for which design compliance has been declared ED Decision 2023/013/R The following tables provide examples of ‘substantial’ changes. The classification may change due to cumulative effects and/or combinations of individual changes. **A.1    Examples of ‘substantial’ changes for small aeroplanes (CS**‑**23)** A.1.1  Table A‑1 contains examples of changes that are ‘substantial’ for small aeroplanes (CS‑23). Table A-1 — Examples of when a new declaration of design compliance would be required under Subpart C for substantial changes for small aeroplanes (CS‑23) <table border="1" cellpadding="0" cellspacing="0" width="605"> <tr> <td valign="top" width="60"> <p>Example</p> </td> <td valign="top" width="257"> <p>Description of change</p> </td> <td valign="top" width="287"> <p>Notes</p> </td> </tr> <tr> <td valign="top" width="60"> <p>1.</p> </td> <td valign="top" width="257"> <p>Change to wing location (tandem, forward, canard, high/low).</p> </td> <td valign="top" width="287"> <p>Proposed change to the design is so extensive that a substantially complete demonstration of compliance with the applicable detailed technical specifications is required.</p> </td> </tr> <tr> <td valign="top" width="60"> <p>2.</p> </td> <td valign="top" width="257"> <p>Change to engine configuration (tractor/pusher).</p> </td> <td valign="top" width="287"> <p>Proposed change to the design is so extensive that a substantially complete demonstration of compliance with the applicable detailed technical specifications is required.</p> </td> </tr> <tr> <td valign="top" width="60"> <p>3.</p> </td> <td valign="top" width="257"> <p>Change from an all-metal to all-composite aeroplane.</p> </td> <td valign="top" width="287"> <p>Proposed change to the design is so extensive that a substantially complete demonstration of compliance with the applicable detailed technical specifications is required.</p> </td> </tr> </table> ##### Appendix B to point 21L.A.103 Classification of changes to the design of an aircraft for which design compliance has been declared *ED Decision 2023/013/R* The following tables provide examples of ‘substantial’ changes. The classification may change due to cumulative effects and/or combinations of individual changes. **A.1 Examples of ‘substantial’ changes for small aeroplanes (CS**‑**23)** A.1.1 Table A‑1 contains examples of changes that are ‘substantial’ for small aeroplanes (CS‑23). ***Table A-1 — Examples of when a new declaration of design compliance would be required under Subpart C for substantial changes for small aeroplanes (CS‑23)*** <table bgcolor="#d9d9d9" cellpadding="7" cellspacing="0"> <col/> <col/> <col/> <tr valign="top"> <td bgcolor="#808080"><p align="left"> <b>Example</b></p> </td> <td bgcolor="#808080"><p align="left"> <b>Description of change</b></p> </td> <td bgcolor="#808080"><p align="left"> <b>Notes</b></p> </td> </tr> <tr valign="top"> <td bgcolor="#d9d9d9"><p align="left"> 1.</p> </td> <td bgcolor="#d9d9d9"><p align="left"> Change to wing location (tandem, forward, canard, high/low).</p> </td> <td bgcolor="#d9d9d9"><p align="left"> Proposed change to the design is so extensive that a substantially complete demonstration of compliance with the applicable detailed technical specifications is required.</p> </td> </tr> <tr valign="top"> <td bgcolor="#d9d9d9"><p align="left"> 2.</p> </td> <td bgcolor="#d9d9d9"><p align="left"> Change to engine configuration (tractor/pusher).</p> </td> <td bgcolor="#d9d9d9"><p align="left"> Proposed change to the design is so extensive that a substantially complete demonstration of compliance with the applicable detailed technical specifications is required.</p> </td> </tr> <tr valign="top"> <td bgcolor="#d9d9d9"><p align="left"> 3.</p> </td> <td bgcolor="#d9d9d9"><p align="left"> Change from an all-metal to all-composite aeroplane.</p> </td> <td bgcolor="#d9d9d9"><p align="left"><a name="_Hlk159342121"></a> Proposed change to the design is so extensive that a substantially complete demonstration of compliance with the applicable detailed technical specifications is required.</p> </td> </tr> </table>