Which of the following is NOT a major component of the A-21 cargo bag?

The A-21 cargo bag is a critical component in airborne operations, designed to facilitate the safe and efficient dropping of cargo from aircraft. Understanding its major components is key to effectively using the bag in jumps. The canvas cover, sling assembly with scuff pad, and quick release assembly are all integral parts of the A-21 cargo bag.

The canvas cover serves as the primary enclosure for the cargo, protecting it during transport and ensuring that it stays contained during the drop. The sling assembly, complete with a scuff pad, is essential for securing the load and ensuring that it can be safely attached to the aircraft and released in mid-air. The quick release assembly allows for the rapid deployment of cargo, a critical function during airborne operations.

In contrast, the safety harness strap is not considered a major component of the A-21 cargo bag itself. While safety harnesses are important in parachuting operations to secure personnel, they are not part of the standard features of the A-21 cargo bag design. This distinction is key in identifying which items are inherently part of the cargo bag's structure and function as opposed to involving personal safety equipment used by jumpers.