Boeing Quality QA Practice Test

A standard is a documented, approved method that is used repeatedly to address issues like non-conformances, providing a consistent way to perform repairs and meet requirements across the organization. It establishes the expected approach and criteria so repairs are uniform, repeatable, and verifiable.

A procedure describes the specific sequence of steps to accomplish a task, which is broader than the repair technique itself. A work instruction goes into even more detailed, hands-on instructions for a particular operator. A guideline offers recommended practices that may be optional rather than mandatory.