Which chapter covers diagnostic and maintenance systems?

Which chapter covers diagnostic and maintenance systems?

• A. Cabin Systems
• B. Diagnostic and Maintenance System
• C. Water Ballast
• D. Pneumatic

Answer: (B)

In ATA coding, chapter titles indicate the area of focus. The chapter titled Diagnostic and Maintenance System is the one that specifically covers how systems are diagnosed, fault detection, maintenance data, and related procedures. That direct naming signals its scope, which is exactly what the question asks for. The other names refer to different system areas—Cabin Systems, Water Ballast, and Pneumatic—so they don’t address diagnostics or maintenance topics. Therefore, the chapter that directly matches the concept of diagnosing and maintaining systems is the correct one.

In ATA coding, chapter titles indicate the area of focus. The chapter titled Diagnostic and Maintenance System is the one that specifically covers how systems are diagnosed, fault detection, maintenance data, and related procedures. That direct naming signals its scope, which is exactly what the question asks for. The other names refer to different system areas—Cabin Systems, Water Ballast, and Pneumatic—so they don’t address diagnostics or maintenance topics. Therefore, the chapter that directly matches the concept of diagnosing and maintaining systems is the correct one.