What does a category 1B survey card require?

• A. Corrective action prior to system certification
• B. Corrective action prior to manned use
• C. Corrective action prior to date
• D. No action

Answer: (A)

Category 1B survey cards flag issues that are critical enough to block formal approval of the system. The point of labeling with this category is that any corrective action must be completed before the system can be certified for use. Certification is the official clearance that the system meets all safety and performance standards, so unresolved items prevent that clearance.

Leaving the corrective action unresolved would mean the system cannot be certified, which is why the requirement is corrective action prior to system certification. The other options are not aligned with the certification milestone—preparing for manned use is a narrower trigger, a vague date is not the formal milestone, and no action is incompatible with a high-priority category.