Continuous Descent Final Approach
FAA Advisory Circular AC 120-108 — Continuous Descent Final Approach. Guidance on air carrier (Part 121) operations and safety programs.
About this document
AC 120-108, Continuous Descent Final Approach, is an FAA advisory circular providing guidance related to air carrier (Part 121) operations and safety programs. Advisory circulars are the FAA's non-regulatory method of explaining how to comply with the regulations and describing acceptable means, methods, and practices; they are not themselves binding but are widely relied upon in training and operations.
This document sets out the FAA's recommended approach to the subject of continuous descent final approach. Read it alongside the applicable sections of 14 CFR, which state the binding requirements.
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Take a free practice test →AC-120-108 is an official FAA publication in the public domain. We host a copy so you can read it in-browser; always confirm you are reading the current edition on faa.gov. The description above is an original summary and is a study aid, not a substitute for the document or the regulations.