Airworthy PrepLearning Statement Code
AMP039Recall fuel - types / characteristics / contamination / fueling / defueling / dumping
Aviation Mechanic - Powerplant Exams, Learning Statement Reference Guide
Written as amp039 or AMP039 on your score report.
The FAA's wording
Recall fuel - types / characteristics / contamination / fueling / defueling / dumping.
What it means
AMP039 is a Learning Statement Code. Tests that are not yet built on an Airman Certification Standards (ACS) document print these codes instead of ACS codes. Each one names a subject the FAA asked about, so seeing AMP039 on your report means at least one of your wrong answers was on this subject.
Seeing it on your score report
Your Airman Knowledge Test Report lists a code for each area where you missed a question. Seeing AMP039 there means at least one of your wrong answers was on this subject. 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: Learning Statement Reference Guide for Airman Knowledge Testing (FAA, effective August 1, 2023); FAA Airman Knowledge Testing Matrix (revised 9/25/26), p. 2.
The A&P mechanic tests now print ACS codes instead. You will see AMP039 only on an older A&P test report. Today's A&P codes
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.