In ECMS, routing validation is used to verify that routing steps, work centers, times, and production resources reflect the correct manufacturing sequence and to ensure feasibility for engine assembly.

• A. Verifying that routing steps, work centers, times, and PRTs reflect the correct manufacturing sequence; ensures feasibility for engine assembly
• B. Managing revision levels of documents
• C. Attesting that calibration records are up to date
• D. Backing up data to external storage

Answer: (C)

Routing validation is about ensuring the production path is executable and correct, which means checking that each step uses the right sequence, the proper work centers, accurate timing, and the correct production resources (PRTs) required at each stage. In engine assembly, getting the sequence and resources right is essential for a feasible, smooth build, so verifying that all elements align with the intended manufacturing flow directly supports feasibility and correctness of the route.

The option that centers on verifying routing steps, work centers, times, and PRTs to reflect the correct sequence and to ensure feasibility best captures this purpose. The other choices relate to document revision control, calibration records, or data backup, which are not part of routing validation.