Airworthy PrepFundamentals of Instructing test code
FI.I.D.K5Fundamentals of Instructing: Student Evaluation, Assessment, and Testing
Fundamentals of Instructing test standard, area of operation I, task D
Written as fi.i.d.k5 or FI.I.D.K5 on your score report.
The FAA's wording
Purposes and types of critiques.
What it means
FI.I.D.K5 is a knowledge element in the Fundamentals of Instructing area of operation of the Fundamentals of Instructing test standard. A knowledge element is something the FAA expects you to know, and the written test asks questions on it.
- FI
- Fundamentals of Instructing (flight instructor ACS)
- I
- Area of operation I: Fundamentals of Instructing
- D
- Task D: Student Evaluation, Assessment, and Testing
- K5
- Knowledge element 5
Seeing it on your score report
Your Airman Knowledge Test Report lists a code for each area where you missed a question. Seeing FI.I.D.K5 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, Area of Operation I (November 2023, effective May 31, 2024); FAA Airman Knowledge Testing Matrix (revised 9/25/26), p. 2.
Printed on 1 test
- Fundamentals of Instructing (FOI)
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.