What document explains deficiency, impact, and proposed solutions for acquisition requirements?

The correct document that explains deficiency, impact, and proposed solutions for acquisition requirements is the AF Form 1067. This form is specifically designed to address issues related to the operational capability and readiness of equipment and systems. It serves as a comprehensive tool for identifying deficiencies within a system and assessing how these deficiencies impact operations. Furthermore, the AF Form 1067 not only highlights the problems but also encompasses proposed solutions or recommendations for addressing these deficiencies, facilitating the decision-making process for acquisition.

The other options refer to different types of forms or technical orders that do not specifically serve the purpose of detailing deficiencies related to acquisition requirements. For instance, AFTO Form 223 is more oriented toward documenting maintenance actions and status, whereas TO 00-20-9 is mainly concerned with maintenance management procedures and directives. Technical Order 00-35D-54 typically focuses on stability in related technical areas. Thus, while they play vital roles in equipment management and other operational contexts, they do not fulfill the same role as AF Form 1067 in regards to acquisition requirements.