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IL.IX.A — Straight-and-Level Flight

IL.IX.A for the Flight Instructor Powered Lift ACS: official objective, references, and 9 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.IX.A official ACS context
Certificate or ratingFlight Instructor
Aircraft categoryPowered Lift
Area of operationArea of Operation IX. Fundamentals of Flight
TaskTask A. Straight-and-Level Flight
Task code prefixIL.IX.A
Official referencesFAA-H-8083-2, FAA-H-8083-9, FAA-H-8083-25
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 straight-and-level flight, 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.
  • IX identifies Fundamentals of Flight, the Area of Operation.
  • A identifies Straight-and-Level Flight, 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.IX.A.K1Basic elements of the aircraft and aerodynamics that affect the ability to maintain straight-and-level flight.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.IX.A.K2Flight control and trim use, if applicable.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.IX.A.K3The pilot's visual references when performing the maneuver.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.IX.A.K4Integrated flight instruction.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
IL.IX.A.K5Common errors related to this Task.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.IX.A.R1Distractions, task prioritization, loss of situational awareness, or disorientation.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
IL.IX.A.R2Collision hazards.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.IX.A.S1Establish and maintain straight-and-level flight.Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test.
IL.IX.A.S2Analyze and correct common errors related to this Task.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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