Which manual provides guidance on detecting, treating, and preventing aircraft corrosion?

The correct choice is indeed the manual known as NA 01-1A-509. This document is specifically dedicated to addressing the critical issue of aircraft corrosion management. It provides thorough guidance on how to detect various forms of corrosion, treat them effectively, and implement preventive measures to maintain the integrity of the aircraft over time. By following the protocols outlined in this manual, maintenance personnel can significantly extend the lifespan of the aircraft and ensure safety in operations.

Each of the other manuals listed has its own focus and purpose in the maintenance and operation of aircraft, but none are specifically tailored to the comprehensive corrosion management like NA 01-1A-509.