What is expected when a CAT 4 TPDR is issued?

When a CAT 4 TPDR (Technical Publication Deficiency Report) is issued, it is recognized that the issue reported does not have an impact on mission readiness and is categorized as a non-technical matter. This means that while the report may identify a concern related to a technical publication, it is not deemed critical to the operational capability of the aircraft or equipment.

The classification as CAT 4 highlights that the matter is more administrative than technical, indicating that it can be rectified without requiring immediate intervention or resolution. Addressing a CAT 4 TPDR is essential for maintaining proper documentation and ensuring that future references to the technical publication are accurate, but it does not necessitate an immediate action as seen in higher categories of TPDRs that correlate with serious safety or operational issues.