Definition
FAA Advisory Circular 61-67, titled 'Stall and Spin Awareness Training,' is a non-regulatory FAA publication that provides guidance to pilots and flight instructors on stall and spin recognition, avoidance, and recovery. The phrase 'as revised' means the most current version of the document, since the FAA periodically updates ACs and replaces older revisions.
Plain English
It is an FAA guidance document about how to teach and learn stall and spin awareness. 'As revised' just means use the latest version, because the FAA updates these documents from time to time.
Context Anchor
You may see AC 61-67 referenced in FAA handbooks, instructor training, and discussions of stall and spin awareness.
Derivation
Advisory' comes from Latin advisare, meaning to give counsel or guidance. 'Circular' refers to a document circulated among a group. Together, an Advisory Circular is FAA guidance circulated to the aviation community — informational, not legally binding like a regulation.
Why Pilots Care
Following its guidance reduces the risk of stall/spin accidents, which remain a leading cause of fatal general aviation incidents.
Intuition Check
AC does not mean alternating current here; it means Advisory Circular. “As revised” does not mean any version is acceptable; it means use the current updated version.
Example Sentence 1
Before the lesson on power-on stalls, the instructor referred the student to AC 61-67 (as revised) for background on stall and spin awareness.
Example Sentence 2
Chapter 5 of the Airplane Flying Handbook directs pilots to AC 61-67 (as revised) for detailed stall and spin avoidance procedures.