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PI.III.C — Instrument Flight Deck Check

PI.III.C for the Flight Instructor – Instrument Powered Lift ACS: official objective, references, and 8 exact knowledge, risk-management, and skill descriptions.

FAA-S-ACS-28, November 2023. This study page does not replace the current FAA publication or an examiner's plan of action.

Official task context

PI.III.C official ACS context
Certificate or ratingFlight Instructor – Instrument
Aircraft categoryPowered Lift
Area of operationArea of Operation III. Preflight Preparation
TaskTask C. Instrument Flight Deck Check
Task code prefixPI.III.C
Official references14 CFR part 91; AC 91.21-1; FAA-H-8083-2, FAA-H-8083-9, FAA-H-8083-15, FAA-H-8083-25; Flight Manual
FAA documentFAA-S-ACS-28 — Flight Instructor – Instrument Rating Powered-Lift Airman Certification Standards
FAA source libraryOpen the official ACS library

Official task objective

To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with conducting a preflight check on the aircraft’s instruments necessary for an IFR flight, and provide effective instruction.

What the ACS code means

  • PI identifies the ACS standard family used for this Flight Instructor – Instrument Powered Lift document.
  • III identifies Preflight Preparation, the Area of Operation.
  • C identifies Instrument Flight Deck Check, 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
PI.III.C.K1Purpose of performing an instrument flight deck check and how to detect possible defects.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PI.III.C.K2IFR airworthiness, including aircraft inspection requirements and required equipment for IFR flight.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PI.III.C.K3Required procedures, documentation, and limitations of flying with inoperative equipment.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PI.III.C.K4Common 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
PI.III.C.R1Operating with inoperative equipment.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PI.III.C.R2Operating with outdated navigation publications or databases.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
PI.III.C.S1Perform preflight inspection by following the checklist appropriate to the aircraft and determine if the aircraft is in a condition for safe instrument flight.Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test.
PI.III.C.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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