Use of FAA-approved data

Updated October 25, 2026 · element text from the FAA Aviation Mechanic ACS (FAA-S-ACS-1)

Practice AM.III.C.K4 out loud, free

What the ACS says

Use of FAA-approved data.

A sample oral question on this element

“The owner brings you an SB from the engine manufacturer. When is compliance with it required?”

Study source: FAA-H-8083-32B (Aviation Maintenance Technician Handbook, Powerplant), chapter 10, pages 10-1, 10-2

If this code is on your test report

Your Airman Knowledge Test Report (AKTR) lists an ACS code for every knowledge area you missed on the written test. On the A&P oral, each of those codes adds one question to that section, on top of a minimum of four random questions (FAA Mechanic Test Generator FAQ). So if AM.III.C.K4 is on your AKTR, expect the examiner to ask about it. More on how codes turn into oral questions: A&P ACS codes: know your codes before the oral.

Answer by voice, get follow-up questions and a report tied to FAA handbook pages. No account needed for the free practice. DMEReady is an independent study tool, not affiliated with or endorsed by the FAA.