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ACS codes · Airframe · Environmental Systems

AM.II.G.K10 · Knowledge

Oxygen system maintenance and inspection procedures

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

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What the ACS says

Oxygen system maintenance and inspection procedures.

A sample oral question on this element

“When you open an oxygen system for maintenance, what precautions do you take?”

Study source: FAA-H-8083-31B (Aviation Maintenance Technician Handbook, Airframe), chapter 16, pages 16-20, 16-21

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.II.G.K10 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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