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PH.IX.A — Night Operations

PH.IX.A for the Private Pilot Rotorcraft ACS: official objective, references, and 17 exact knowledge, risk-management, and skill descriptions.

FAA-S-ACS-15, November 2023. This study page does not replace the current FAA publication or an examiner's plan of action.

Official task context

PH.IX.A official ACS context
Certificate or ratingPrivate Pilot
Aircraft categoryRotorcraft
Area of operationArea of Operation IX. Night Operations
TaskTask A. Night Operations
Task code prefixPH.IX.A
Official references14 CFR part 91; AIM; FAA-H-8083-2, FAA-H-8083-21, FAA-H-8083-25; POH/RFM
FAA documentFAA-S-ACS-15 — Private Pilot for Rotorcraft Category Helicopter Rating Airman Certification Standards
FAA source libraryOpen the official ACS library

Official task objective

To determine the applicant exhibits satisfactory knowledge and risk management associated with night operations.

What the ACS code means

  • PH identifies the ACS standard family used for this Private Pilot Rotorcraft document.
  • IX identifies Night Operations, the Area of Operation.
  • A identifies Night Operations, 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
PH.IX.A.K1Physiological aspects of vision related to night flying.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PH.IX.A.K2Personal equipment essential for night flight.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PH.IX.A.K3Helicopter equipment and lighting requirements for night operations.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PH.IX.A.K4Lighting systems identifying airports/heliports/helipads/landing areas, runways, taxiways and obstructions, as well as pilot controlled lighting.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PH.IX.A.K5Night orientation, navigation, chart reading techniques and methods for maintaining night vision effectiveness.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PH.IX.A.K6Night taxi operations.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PH.IX.A.K7Interpretation of traffic position and direction based solely on position lights.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PH.IX.A.K8Visual illusions at night.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PH.IX.A.K9Appropriate use of automation, if applicable.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
PH.IX.A.R1Collision hazards.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.IX.A.R2Runway incursion.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.IX.A.R3Distractions, 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.
PH.IX.A.R4Effect of visual illusions and night adaptation during all phases of night flying.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.IX.A.R5Night currency versus proficiency.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.IX.A.R6Weather considerations specific to night operations.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.IX.A.R7Inoperative equipment.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
PH.IX.A.S1[Intentionally left blank].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.

Official task notes

  • For applicants that reside in Alaska, refer to 14 CFR part 61, section 61.110.

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

Related ACS tasks