What document is primarily associated with the processing of turnaround transactions?

The document primarily associated with the processing of turnaround transactions is the Air Force Form 350. This form is crucial in the logistics and material management process, specifically for documenting the movement of items within the supply chain, particularly those that require turnaround, such as the return of repairable items or excess inventory back to supply.

The Air Force Form 350 serves as an official record of the transfer of ownership or status change of items, which is essential for maintaining accurate inventory records and ensuring that the proper accounting criteria are met for these transactions. It helps facilitate communication between the various departments involved in logistics, thus ensuring a smooth workflow.

Other options, while related to different aspects of supply chain management or procurement, do not specifically address turnaround transactions. For instance, supply management notices manage overall supply functions but do not capture individual item transactional data. Repair cycle documentation pertains to the tracking of items undergoing repair but is not used for the transactional aspect. Similarly, a purchase request form is involved in acquiring materials but does not deal with the processing of turnaround transactions in the same way as the Air Force Form 350.