How can you determine that the aircraft drawing you are using is the most current version?

• A. By the revision block number alone.
• B. By the revision block number and the log of the most recent drawings.
• C. By the date printed on the title block.
• D. By the material specification in the bill of materials.

Answer: (B)

In aviation drawings, you verify currency by checking both the revision block on the drawing and the corresponding revision history log. The revision block shows the latest revision symbol, date, and a brief description of what changed, which tells you what version you’re looking at. But you need the revision history log (or the document control system) to confirm that there isn’t a newer revision issued after that block. If the block’s revision matches the latest entry in the history, you have the current version; if not, you must obtain and use the newer revision.

Relying on the date printed on the title block isn’t enough because a drawing can be updated without changing that date, and the title date doesn’t reflect the full change history. The material specification in the bill of materials doesn’t indicate whether the drawing itself is the latest version; it relates to parts, not document control. So always pair the revision block with the latest revision log to be sure you’re using the most current drawing.