What should be reviewed at the beginning of each step in the assembly process?

The review of engineering drawings at the beginning of each step in the assembly process is crucial because these drawings provide the foundational specifications and detailed information necessary for accurate assembly. They outline the dimensions, tolerances, and assembly relationships between components, ensuring that the mechanic has a clear understanding of what is required for that specific step.

Engineering drawings also depict any unique features of the assembly and indicate any particular methods that might need to be followed. By starting each assembly step with a thorough review of the engineering drawings, a mechanic can prevent errors, ensure parts are assembled in the correct order, and maintain alignment with the overall design intent. This practice is fundamental in aerospace assembly, where precision is paramount for safety and functionality.

While reviewing work instructions, safety protocols, and tool availability is also important in the broader context of the assembly process, the direct relevance and specificity of engineering drawings make them the most critical item to review at the outset of each step.