Which of the following statements regarding deviations from an aircraft's original type design is true?

In the context of aviation and the regulations governing aircraft design, the statement that is identified as true addresses the implications of deviations from an aircraft's original type design.

Aircraft are certified based on their original type design, which includes specific parameters and performance standards that ensure safety and functionality. Any modifications made to an aircraft that deviate from this original design could have significant implications, including potential impacts on the aircraft's safety, operational capabilities, and compliance with regulatory standards.

In this case, the information provided indicates that only the first statement correctly reflects the requirements or implications of such deviations. This means that the first statement likely outlines a critical aspect related to type design that is essential for ensuring the continued airworthiness of the aircraft.

The second statement may not align with the established rules or could be misleading regarding the aircraft's compliance status after modifications. Thus, the identification of the first statement as true aligns with the understanding that only certain, specific deviations are acceptable under defined circumstances to maintain safety and regulatory compliance.

Focusing on the importance of adhering to the established type design is crucial for any aviation professional or student, as it directly relates to aircraft safety and performance.