What does the T-11 Main pack tray assembly include aside from the diagonal back strap retainer?

The T-11 Main pack tray assembly is designed for parachute operations, and its construction involves various components essential for functionality and safety. Among these components, the waistband adjuster panel plays a crucial role. This panel allows for the adjustment of the waistband, ensuring a snug and secure fit of the parachute harness around the jumper's waist. A well-fitted harness is essential for both comfort during descent and the integrity of the parachute system during deployments.

The other components, while part of the parachute system, are not included in the main pack tray assembly. For instance, the alternate closing loop is a safety mechanism used in different configurations of parachute systems but is not a part of the main pack tray assembly. The emergency handle cover is meant to protect the emergency handle from accidental activation or damage but serves a different function than the waistband adjuster. Similarly, the upper shoulder strap connector is involved in the securement of the shoulder straps to the pack tray but does not pertain to the adjustment of the waistband specifically. Thus, the waistband adjuster panel is the correct choice as it directly relates to the main pack tray assembly's features beyond the diagonal back strap retainer.