What is contained in NA-01-1A-509 Volume 3 for treatment of aircraft?

The correct answer refers to the corrosion treatment methods included in NA-01-1A-509 Volume 3, which is a vital resource for maintaining the longevity and performance of aircraft. Corrosion is a significant concern in aviation, as it can lead to structural failures and malfunctioning of equipment if not properly managed. This volume contains guidelines and procedures specifically tailored to address various types of corrosion that may affect aircraft, detailing techniques and materials that can be employed to treat and prevent corrosion effectively.

In contrast, the other options don't address the primary focus of this specific volume. While instructions for cleaning avionics are essential for aircraft maintenance, they are covered in other technical manuals. Ordering information for tools and guidelines for flying operations may also be crucial but fall outside the specific content of NA-01-1A-509 Volume 3, further emphasizing the significance of understanding corrosion treatment methods in maintaining aircraft safety and performance.