The purpose of a plane test is to verify equipment safety before, during, or after use.

• A. It should be performed only before use
• B. It should be performed only after use
• C. It should be performed only during use
• D. It can be performed before, during, or after use

Answer: (D)

Safety checks should cover the entire usage cycle, not just one moment. Before using equipment, you confirm there are no visible defects, improper setup, or risks from the environment. During use, conditions can change and wear or damage can develop under load or movement, so a timely check helps catch problems before they cause a failure. After use, you look for wear, damage, or degradation that resulted from use and decide whether the item should be retired, repaired, or stored properly. Because issues can appear at any stage, the best practice is to perform checks before, during, or after use.