What FAA publication describes methods of nondestructive testing?

• A. AC 43-3 Nondestructive Testing in Aircraft.
• B. AC 21-1 Aircraft Certification.
• C. AC 120-1 Security Procedures for Maintenance.
• D. AC 65-1 Certification of Maintenance Personnel.

Answer: (A)

Nondestructive testing methods are described in a publication that specifically focuses on NDT in aircraft. This advisory circular provides guidance on how defects can be detected or evaluated without damaging the part, and it covers common techniques such as penetrant testing, magnetic particle testing, eddy current testing, radiographic testing, ultrasonic testing, and visual inspection, along with general practices, qualifications, and safety considerations. It’s the one resource among the options that directly addresses how to perform NDT in aviation maintenance, making it the best choice. The other publications deal with aircraft certification, security procedures for maintenance, or certification of maintenance personnel, none of which prescribe NDT methods.