Airworthy PrepA&P Powerplant test code
AM.III.A.R4Reciprocating Engines
A&P Powerplant test (Section III), subject A
Written as am.iii.a.r4 or AM.III.A.R4 on your score report.
The FAA's wording
Use of other than manufacturer's procedures during maintenance.
What it means
AM.III.A.R4 is a risk management element in the Reciprocating Engines subject of the A&P Powerplant test. 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.
- AM
- Aviation Mechanic, the mechanic test standard
- III
- Section III: Powerplant
- A
- Subject: Reciprocating Engines
- R4
- Risk management element 4
Seeing it on your score report
Your Airman Knowledge Test Report lists an ACS code for each question you missed. Seeing AM.III.A.R4 there means at least one of your wrong answers was on this element. The examiner retests every code on your report during the oral part of the practical test, so study it before then.
Sources: Aviation Mechanic ACS Companion Guide, FAA-G-ACS-1 (Change 2), ch. 2, p. 11 and ch. 5, p. 19; FAA-S-ACS-1, Appendix 1, p. A-1.
The examiner will ask about the codes you missed
"All deficient knowledge areas, as indicated by the ACS codes on the AKTRs, are retested during the oral portion of the test."
Your oral test is 4 random questions plus one for every code on your report, closed book. Our A&P Oral & Practical course builds a mock oral from the codes you tick, with a model answer and FAA source for every question, and a guide for every practical project. $49.
See Oral & PracticalTry a sample question on AM.III.A.R4
During a compression check, a cylinder reads low. A coworker suggests tapping the rocker arm over the valve stem with a fiber drift and hammer to dislodge carbon from the valve seat. According to the handbook, when may this be done?
Practice reciprocating engines
The full A&P Powerplant course has questions on every element in this subject area, with an explanation and FAA source for each.