Dodigv164.part21.rar -

: Approval of the aircraft's design and components.

In technical and regulatory contexts, "Part 21" refers to a critical set of aviation standards. If your file is a digital copy of these regulations, here is an informative overview: DODIGV164.part21.rar

: Multi-part RAR files require all segments to be present in the same folder. If "part21" is the final part, you will also need the preceding 20 files to extract the content. : Approval of the aircraft's design and components