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IL.II.E — Flight Controls and Systems

IL.II.E for the Flight Instructor Powered Lift ACS: official objective, references, and 20 exact knowledge, risk-management, and skill descriptions.

FAA-S-ACS-27, November 2023. This study page does not replace the current FAA publication or an examiner's plan of action.

Official task context

IL.II.E official ACS context
Certificate or ratingFlight Instructor
Aircraft categoryPowered Lift
Area of operationArea of Operation II. Technical Subject Areas
TaskTask E. Flight Controls and Systems
Task code prefixIL.II.E
Official referencesFAA-H-8083-2, FAA-H-8083-9, FAA-H-8083-25; Flight Manual
FAA documentFAA-S-ACS-27 — Flight Instructor for Powered-Lift Category Airman Certification Standards
FAA source libraryOpen the official ACS library

Official task objective

To determine the applicant understands the flight controls and systems on the aircraft provided for the flight test, can apply that knowledge, manage associated risks, demonstrate appropriate skills, and provide effective instruction.

What the ACS code means

  • IL identifies the ACS standard family used for this Flight Instructor Powered Lift document.
  • II identifies Technical Subject Areas, the Area of Operation.
  • E identifies Flight Controls and Systems, the Task within that Area.
  • K, R, and S identify knowledge, risk-management, and skill elements. The number selects the item; a trailing lowercase letter identifies a listed sub-element.

Knowledge elements

Official ACS knowledge items and mock-oral treatment
ACS codeOfficial descriptionHow a mock oral can probe it
IL.II.E.K1Aircraft systems, including:Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1aa. Primary flight controlsExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1bb. Secondary flight controlsExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1cc. Powerplant(s) and means of producing thrustExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1dd. Landing gearExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1ee. Fuel, oil, and hydraulicExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1ff. ElectricalExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1gg. AvionicsExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1hh. Pitot-static, vacuum/pressure, and associated flight instrumentsExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1ii. EnvironmentalExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1jj. Deicing and anti-icingExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1kk. Oxygen systemExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1ll. Gearboxes, drive shafts, transmission systems, as applicableExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K1mm. Battery(s) used for propulsion–charging, discharging, and condition, as applicableExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.II.E.K2Indications of and procedures for managing system abnormalities or failures.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.

Risk management elements

Official ACS risk management items and mock-oral treatment
ACS codeOfficial descriptionHow a mock oral can probe it
IL.II.E.R1Detection of system malfunctions or failures.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
IL.II.E.R2Management of a system failure.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
IL.II.E.R3Monitoring and management of automated systems.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
IL.II.E.R4Providing instruction in unfamiliar aircraft or operating with unfamiliar flight display systems and avionics.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.

Skills elements

Official ACS skills items and mock-oral treatment
ACS codeOfficial descriptionHow a mock oral can probe it
IL.II.E.S1Operate at least three of the systems listed in K1a through K1m appropriately.Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test.

Difficulty data

Difficulty calibration is ongoing for this Task. A difficulty estimate is published only with a sufficiently large, privacy-preserving first directly recorded assessment sample. Any observed difficulty comes from Checkride AI mock-oral practice assessments and is a practice-data proxy, not an FAA practical-test pass or fail rate.

Difficulty calibration remains ongoing until an item clears the private reporting threshold. Percentages, when available, describe the share who needed review on their first directly recorded assessment. Underlying sample sizes are never published, and historical final states are not backfilled into this measure.

How to use this in a mock oral

A mock examiner can ask you to explain the published elements, apply them to the configured aircraft and airport scenario, identify risks, and defend a decision. The prompts are practice scenarios; they are not claimed to be actual FAA examiner scripts or a prediction of the questions you will receive.

Practice in a mock oral

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