Question 119General Subjects - 1st Asst/Chief

The correct answer is B. Platform interlocks on a winding drum or traction drive cargo elevator are used to prevent door operation if the platform is at other than a deck level, and only allow door operation when the platform is proved to be at a deck level. This is to ensure the safety of personnel and prevent accidental falls or entrapment when the platform is not aligned with the deck. The other options are incorrect: A is incorrect because it describes the opposite function of the interlocks. C and D are incorrect because they do not accurately describe the purpose of the platform interlocks, which is to control door operation based on the platform position, not to override or prevent elevator operation in an emergency.