Revised, reprinted, or new pages are marked as follows:
- The change number and the effective date are printed on each revised or additional page.
- A page that does not require a change is reprinted in its original form.
- Bold vertical lines in the margin of changed pages indicate the location of substantive revisions to the order. Bold vertical lines adjacent to the title of a chapter, section, or paragraph means that extensive changes have been made to that chapter, section, or paragraph.
- Paragraphs/sections annotated with EN ROUTE, OCEANIC, or TERMINAL are only to be applied by the designated type facility. When they are not so designated, the paragraphs/sections apply to all types of facilities (en route, oceanic, and terminal).
- The annotation, USAF for the U.S. Air Force, USN for the U.S. Navy, and USA for the U.S. Army denotes that the procedure immediately following the annotation applies only to the designated service.
- WAKE TURBULENCE APPLICATION inserted within a paragraph means that the remaining information in the paragraph requires the application of wake turbulence procedures.
- The annotation PHRASEOLOGY denotes the prescribed words and/or phrases to be used in communications.
NOTE: Controllers may, after first using the prescribed phraseology for a specific procedure, rephrase the message to ensure the content is understood. Good judgment must be exercised when using nonstandard phraseology.
- h. The annotation EXAMPLE provides a sample of the way the prescribed phraseology associated with the preceding paragraph(s) will be used. If the preceding paragraph(s) does (do) not include specific prescribed phraseology, the EXAMPLE merely denotes suggested words and/or phrases that may be used in communications.
NOTE: The use of the exact text contained in an example not preceded with specific prescribed phraseology is not mandatory. However, the words and/or phrases are expected, to the extent practical, to approximate those used in the example.