FAA-G-ACS-1 - Companion Guide to the Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards - Change 2 - September 2024

Sep 21, 2026

Uploaded by Sage

Companion Guide FAA-G-ACS-1 supports applicants and examiners in preparing for aviation mechanic certification knowledge (written), oral, and practical tests referenced to the Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards (ACS). The guide explains how it works with the ACS, clarifies the non-regulatory nature of guidance terms like should and may, and specifies voluntary compliance limits for enforcement purposes. Change 2 updates foreword hyperlink routing and records revisions affecting oral and practical retesting procedures.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages27

Reading Time1 h 8 min

AccessFree to download

Introduction

Why We Created This Guide

How This Guide Works with the ACS

Airman Certification Standards Concept

Chapter 1: Overview of Mechanic Testing Process

Chapter 2: How to Use the ACS

Chapter 3: Written Test Description

Chapter 4: How to Register for an FAA Airman Knowledge Test

Chapter 5: Airman Knowledge Test Report (AKTR)

Chapter 6: The Oral and Practical (O&P) Test Process

Chapter 7: Oral and Practical Test Results

Chapter 8: References

Chapter 9: Abbreviations and Acronyms

FAA-G-ACS-1 (with Changes 1 & 2) U.S. Department of Transportation Federal Aviation Administration Companion Guide to the Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards Flight Standards Service Washington, DC 20591 Change 2 (September 2024) Foreword The Federal Aviation Administration (FAA) developed FAA-G-ACS-1, Companion Guide to the Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards , to be used as a companion guide to FAA-S-ACS-1, Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards (ACS) . This guide contains information that may be used in concert with the regulatory material in the ACS and assists the applicant and examiner in preparing for the knowledge, oral , and practical tests. This guide and the ACS are available for download [from](from www.faa.gov/training_testing/testing/acs)[ ](from www.faa.gov/training_testing/testing/acs)[www.faa.gov/training_testing/testing/acs](from www.faa.gov/training_testing/testing/acs). Please send comments regarding this document using the following link to the Airman Testing Branch Mailbox ([afs630comments@faa.gov](afs630comments@faa.gov)) . Revision History | Document \# | Description | Development Date | | --- | --- | --- | | FAA-G-ACS-1 | Companion Guide for Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards | May 2022 | | FAA-G-ACS-1 | Companion Guide for Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards (with Change 1) | January 2023 | | FAA-G-ACS-1 | Companion Guide for Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards (with Changes 1 & 2) | September 2024 | Record of Changes Change 1 (January 2023) Revised the last paragraph in the “Retesting the Oral and Practical” section of Chapter 7: Oral and Practical Test Results. Change 2 (September 2024) Updated the hyperlink in the Foreword to point directly to the ACS webpage on [faa.gov](faa.gov) (page i) . Table of Contents Introduction .................................................................................................................................................................6 Chapter 1: Overview of Mechanic Testing Process ..................................................................................................8 Chapter 2: How to Use the ACS .............................................................................................................................. 11 Chapter 3: Written Test Description ........................................................................................................................ 12 Chapter 4: How to Register for an FAA Airman Knowledge Test ........................................................................... 15 Chapter 5: Airman Knowledge Test Report (AKTR) ................................................................................................ 19 Chapter 6: The Oral and Practical (O&P) Test Process ..........................................................................................20 Chapter 7: Oral and Practical Test Results .............................................................................................................24 Chapter 8: References.............................................................................................................................................25 Chapter 9: Abbreviations and Acronyms .................................................................................................................26 Introduction Why We Created This Guide The FAA created this guide to provide information on non-regulatory material regarding the FAA-S-ACS- 1 , Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards that is relevant and useful to the community. The regulatory material is found in the ACS. The FAA not

FAQs

What is FAA-G-ACS-1 intended to help with during certification testing?

It provides non-regulatory, test-preparatory information that assists applicants and examiners in preparing for the knowledge, oral, and practical tests referenced in the ACS.

Is this guide legally binding or used for enforcement?

No. The guidance is voluntary, non-regulatory, and is not relied on by the FAA as a separate basis for affirmative enforcement action or administrative penalty.

What does Change 2 (September 2024) modify in the document?

Change 2 updates the foreword hyperlink to point directly to the ACS webpage on faa.gov, and records relevant revision history for the companion guide.

Sep 21, 2026

Uploaded by Sage