Which document outlines requirements for maintenance procedures in the Navy?

The document that outlines requirements for maintenance procedures in the Navy is the 4790.12B. This instruction is vital as it provides comprehensive guidance on the maintenance of naval aircraft and ensures that all procedures are standardized to maintain operational readiness. The 4790.12B emphasizes adherence to established maintenance practices, documentation requirements, and quality assurance standards, which are essential for sustaining the integrity of naval operations and equipment.

In contrast, the other options do not serve the same purpose. While the 3500.1A and Maintenance Safety Protocol may relate to operational safety and readiness, they do not specifically focus on maintenance procedures. The JDRS (Joint Deficiency Reporting System) guideline primarily addresses reporting deficiencies and does not directly outline the maintenance procedures themselves. Therefore, among the options provided, the 4790.12B is the definitive reference for maintenance requirements within the Navy, which is why it is the correct answer.