Airworthy PrepAirline Transport Pilot Airplane test code
AA.I.E.R4Preflight Preparation: Air Carrier Operations (ATP) (AMEL, AMES)
Airline Transport Pilot Airplane test standard, area of operation I, task E
Written as aa.i.e.r4 or AA.I.E.R4 on your score report.
The FAA's wording
Loss of cabin pressure.
What it means
AA.I.E.R4 is a risk management element in the Preflight Preparation area of operation of the Airline Transport Pilot 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.
- AA
- Airline Transport Pilot Airplane ACS
- I
- Area of operation I: Preflight Preparation
- E
- Task E: Air Carrier Operations (ATP) (AMEL, AMES)
- 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 AA.I.E.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-11A, Airline Transport Pilot and Type Rating 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 4 tests
- Airline Transport Pilot Multiengine Airplane Canadian Conversion (ACM)
- Airline Transport Pilot Single Engine Airplane Canadian Conversion (ASC)
- Airline Transport Pilot Multiengine Airplane (ATM)
- Airline Transport Pilot Single Engine Airplane (135) (ATS)
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.