Airworthy PrepLearning Statement Code
AMP055Recall radial engine - install / inspect / repair / service
Aviation Mechanic - Powerplant Exams, Learning Statement Reference Guide
Written as amp055 or AMP055 on your score report.
The FAA's wording
Recall radial engine - install / inspect / repair / service.
What it means
AMP055 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 AMP055 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 AMP055 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 AMP055 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.