Which section is likely to provide information about designations for aircrewmen?

The section that provides information about designations for aircrewmen is typically the first section. This is because Section 1 often serves as an introductory part of a manual or guide, outlining key roles, responsibilities, and basic designations of personnel within a field. It sets the foundation for understanding the various job functions and classifications, including those related to aircrewmen. This section ensures that readers grasp the essential designations and their significance before delving into more specialized or detailed content found in subsequent sections.