Definition
An identifier printed in the margin of an FAA instrument procedure chart that uniquely identifies that specific chart and its revision. It allows a pilot, dispatcher, or briefer to confirm they are looking at the correct chart and the current version of it.
Plain English
A code printed on the edge of the chart that tells you exactly which chart you're holding and which version it is.
Context Anchor
Seen in the margin identification area of FAA instrument procedure charts, along with items such as the procedure title, airport name, location, and chart date.
Why Pilots Care
Ensures pilots select and use the correct, current chart for safe navigation.
Intuition Check
Do not read this number as a heading, altitude, frequency, or clearance item. It is only an identifier for the chart in the FAA charting system.
Example Sentence 1
Before briefing the approach, the captain checked the FAA chart reference number in the margin to confirm the plate was current.
Example Sentence 2
Margin identification includes the FAA chart reference number to avoid confusion with similar editions.