Standard Notes are provided for reference to standard text called out in Northrop Grumman Aeronautics Systems Purchase Orders by the standard text code. These codes and their text are typically referred to as "Standard Notes."

The Standard Note Number consists of a subject letter, 3- or 4-digit number, and a 3-digit iteration (revision) number (e.g., X012.000, X1234.000). Some Standard Notes have “fill-in-the-blank” fields when additional data is needed.

Refer to the appropriate subject section when searching for a Standard Note to view the text for that note.