As a Certified Flight Instructor (CFI), I know firsthand how frustrating it can be to decode ACS codes and descriptions on student knowledge tests. That’s why I’m excited to introduce the FAA Knowledge Test Decoder – a tool designed specifically to help you quickly and easily identify missed questions on your students’ knowledge tests.

Google Extension Coming Soon!

With this easy-to-use tool, you’ll gain instant access to:

  • A quick and easy way to decode ACS codes and descriptions
  • Easy-to-read explanations of missed questions
  • A way to quickly identify knowledge gaps in your students’ training
  • A user-friendly interface that’s easy to navigate
  • Personalized support from a team of aviation experts

As a bonus, the FAA Knowledge Test Decoder is designed to accept all FAA knowledge tests, including Private PilotInstrument PilotCommercial Pilot, Flight Instructor/FOIAirline Transport PilotUnmanned Aircraft Systems, and even A&P mechanics. No matter which test you or your students are taking, our tool has you covered.

How to use:

  1. Log in to
  2. In the menu, click on “Results”
  3. Select the test that you want to download the report for and click “View Report”
  4. Download to save the PDF version of your knowledge test report
  5. Ensure that the PDF version of the knowledge test report is the PSI original and not a photo of the knowledge test
  6. Return to the FAA Code Extractor website
  7. Upload the PDF knowledge test report using the form above

Note: It is important to ensure that the PDF version of your knowledge test report is the original one downloaded from, as photos or scans of the report may not be accepted by the FAA Code Extractor.

Disclaimer: I have made every effort to ensure that the FAA error code descriptions provided by our FAA Knowledge Test Data Extractor are accurate and up-to-date, sourced directly from official FAA ACS/PTS materials. However, regulations and guidelines can change, and human error may occur. As a user of this software, it is your responsibility to double-check the information provided and cross-reference it with the latest official FAA publications before signing any endorsements for your students. I cannot be held responsible for any discrepancies or errors that may arise from the use of our software. Always verify the information you receive with the official FAA sources to ensure the safety and success of your students.

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