Which document lists the exact part numbers and assemblies for replacement items like a bolt or bulb?

• A. Aircraft Maintenance Manual
• B. Weight and Balance Manual
• C. Wiring Diagram Manual
• D. Illustrated Parts Catalog

Answer: (D)

When you need to replace a bolt, bulb, or any other item, you need a reference that connects the physical part to its exact manufacturer part number and to the exact assembly it belongs to. The Illustrated Parts Catalog provides that dual purpose: it contains numbered illustrations of assemblies with each part shown in place and labeled with its precise part number, along with quantities and notes about how parts fit together. This makes it the reliable source for identifying the exact item to order and ensuring it matches the system and configuration you’re working on, including any variations or superseded parts.

The Aircraft Maintenance Manual, by contrast, focuses on how to perform maintenance tasks, procedures, tools, torque values, and inspection steps rather than identifying parts. The Wiring Diagram Manual deals with electrical circuits and schematics, not part numbers. The Weight and Balance Manual covers load calculations and center of gravity information, not hardware identification.