What are considered low stressed components of an aircraft?

Low stressed components of an aircraft are those parts that do not experience significant loads during normal operations, which allows for lighter materials and simpler designs. Doors, hatches, fairings, and access panels fall into this category as they primarily serve functional and aerodynamic purposes rather than structural integrity under stress.

These components are designed to provide access and streamline airflow, but they do not support critical loads or structural integrity of the aircraft. Their primary roles are to facilitate entry into various sections of the aircraft and to improve the aerodynamics, which ultimately contributes to overall efficiency without needing to bear high loads. In contrast, the other options include components like engine mounts and wing spars, which are essential for maintaining the structural integrity and must endure high stress. Thus, identifying these low stressed components is crucial for differentiating between parts that require robust, high-strength materials and those where lighter, less robust materials may be appropriate.