Airworthy Prep

A&P Airframe test code

AM.II.F.K7Hydraulic and Pneumatic Systems

A&P Airframe test (Section II), subject F

Written as am.ii.f.k7 or AM.II.F.K7 on your score report.

The FAA's wording

Servicing, function, and operation of accumulators.

Aviation mechanic test standard, FAA-S-ACS-1, Section II, Subject F

What it means

AM.II.F.K7 is a knowledge element in the Hydraulic and Pneumatic Systems subject of the A&P Airframe test. A knowledge element is something the FAA expects you to know, and the written test asks questions on it.

AM
Aviation Mechanic, the mechanic test standard
II
Section II: Airframe
F
Subject: Hydraulic and Pneumatic Systems
K7
Knowledge element 7

Seeing it on your score report

Your Airman Knowledge Test Report lists an ACS code for each question you missed. Seeing AM.II.F.K7 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."
FAA-S-ACS-1, Appendix 1, Evaluator Responsibilities, p. A-1

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 & Practical

Try a sample question on AM.II.F.K7

Hydraulic and Pneumatic Systems ยท AM.II.F.K7

A cylindrical accumulator in a 3,000 psi hydraulic system has a nitrogen preload of 1,500 psi with zero hydraulic pressure. As the pump starts, at what hydraulic pressure does the accumulator piston begin to move?

Practice hydraulic and pneumatic systems

The full A&P Airframe course has questions on every element in this subject area, with an explanation and FAA source for each.