ACS codes · Powerplant · Engine Fuel and Fuel Metering Systems
AM.III.I.R4 · Risk management
Considerations during fuel system maintenance
Updated October 25, 2026 · element text from the FAA Aviation Mechanic ACS (FAA-S-ACS-1)
Practice Engine Fuel and Fuel Metering Systems out loud, free
What the ACS says
Considerations during fuel system maintenance.
Sample oral question
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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.I.R4 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.
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