Airworthy PrepFlight Instructor Airplane test code
AI.X.I.R4Slow flight, Stalls, and Spins: Spin Awareness and Spins
Flight Instructor Airplane test standard, area of operation X, task I
Written as ai.x.i.r4 or AI.X.I.R4 on your score report.
The FAA's wording
Effect of environmental elements on airplane performance related to spins (e.g., turbulence, microbursts, and high-density altitude).
What it means
AI.X.I.R4 is a risk management element in the Slow flight, Stalls, and Spins area of operation of the Flight Instructor Airplane test standard. A risk management element is a hazard the FAA expects you to be able to spot and manage, and the written test can ask questions on it.
- AI
- Flight Instructor Airplane ACS
- X
- Area of operation X: Slow flight, Stalls, and Spins
- I
- Task I: Spin Awareness and Spins
- R4
- Risk management element 4
Seeing it on your score report
Your Airman Knowledge Test Report lists a code for each area where you missed a question. Seeing AI.X.I.R4 there means at least one of your wrong answers was on this element. If you are taking the practical test next, expect the examiner to ask about it. Retaking the written? Start with this code and the others on your report.
Sources: FAA-S-ACS-25, Flight Instructor for Airplane Category ACS (November 2023, effective May 31, 2024); FAA Airman Knowledge Testing Matrix (revised 9/25/26), p. 2.
Can be printed on 2 tests
- Flight Instructor Airplane (Added Rating) (AFA)
- Flight Instructor Airplane (FIA)
Got more than one code on your report?
Paste them all into the free study planner and it groups them by subject, most missed first.