M​‌‍‍‍‌‍‍‌‌‍‌‍‍‌‌‌‍‍‍‍​ost modules in this course will contain discussion activities that provide opportunities to explore important concepts from the reading assignments. These discussions are multi-topic: each discussion activity will contain more than one discussion topic. Please refer to the discussion rubric for information on how your posting and replying to a classmate’s post will be graded. In your orig​‌‍‍‍‌‍‍‌‌‍‌‍‍‌‌‌‍‍‍‍​inal primary posting for this discussion activity, describe the different issues related to airframe structures having insufficient rigidity. https://www-accessengineeringlibrary-com.ezproxy.libproxy.db.erau.edu/content/book/9780071831130? https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/phak https://www.ecfr.gov/current/title-14/chapter-I/subchapter-C/part-25/subpar​‌‍‍‍‌‍‍‌‌‍‌‍‍‌‌‌‍‍‍‍​t-C Aircraft Materials and Design