Which library maintains Naval Air Training and Operating Procedures Standardization manuals?

The correct choice pertains to the Operations Department Library, which is responsible for maintaining the Naval Air Training and Operating Procedures Standardization (NATOPS) manuals. NATOPS establishes a standardized approach to operating procedures within the Navy, ensuring safety and operational efficiency. The Operations Department is critical in overseeing these procedures, as it aligns with the mission requirements and ensures that all relevant training manuals are accessible to personnel who need to follow standardized protocols.

The other choices do not align with the specific responsibilities for maintaining NATOPS manuals. For instance, CTPL refers to the Carrier Training and Planning Library, which is more focused on specific carrier operations. The DTPL, or Data Training Planning Library, serves different training-related purposes. Similarly, the NWP Library deals with Navy Warfare Publications, which encompass a broader range of tactical and operational documents but does not specifically focus on the standardization of air training manuals.