PH.VIII.H — Dynamic Rollover

PH.VIII.H for the Private Pilot Rotorcraft ACS: official objective, references, and 11 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.VIII.H official ACS context
Certificate or rating	Private Pilot
Aircraft category	Rotorcraft
Area of operation	Area of Operation VIII. Emergency Operations
Task	Task H. Dynamic Rollover
Task code prefix	PH.VIII.H
Official references	FAA-H-8083-2, FAA-H-8083-21, FAA-H-8083-25; POH/RFM; SAFO 16016
FAA document	FAA-S-ACS-15 — Private Pilot for Rotorcraft Category Helicopter Rating Airman Certification Standards
FAA source library	Open the official ACS library

Official task objective

To determine the applicant exhibits satisfactory knowledge and risk management associated with dynamic rollover.

What the ACS code means

PH identifies the ACS standard family used for this Private Pilot Rotorcraft document.
VIII identifies Emergency Operations, the Area of Operation.
H identifies Dynamic Rollover, 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 code	Official description	How a mock oral can probe it
PH.VIII.H.K1	Elements related to dynamic rollover.	Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PH.VIII.H.K2	Interactions between thrust, crosswind, slope, lateral CG, aircraft weight, and flight controls that contribute to dynamic rollover.	Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
PH.VIII.H.K3	Preventive flight technique and recovery during flight operations, including slope operations.	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 code	Official description	How a mock oral can probe it
PH.VIII.H.R1	Surface conditions conducive to dynamic rollover.	Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.VIII.H.R2	Landing gear proximity to obstructions on the ground during low altitude hover.	Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.VIII.H.R3	Flight control inputs during takeoff or landing.	Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.VIII.H.R4	Sideward hover.	Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.VIII.H.R5	Aircraft slope limitations.	Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.VIII.H.R6	Critical rollover angle and rolling moment.	Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
PH.VIII.H.R7	Translating tendency.	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 code	Official description	How a mock oral can probe it
PH.VIII.H.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

Note: Evaluator assesses this Task orally only.

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

All Private Pilot Rotorcraft ACS tasks
49 task-level resources from FAA-S-ACS-15.
PH.VIII.G — Antitorque System Failure
Area of Operation VIII. Emergency Operations
PH.VIII.I — Ground Resonance
Area of Operation VIII. Emergency Operations
PH.VIII.A — Powerplant Failure in a Hover in a Single-Engine Helicopter
Area of Operation VIII. Emergency Operations
PH.VIII.B — Powerplant Failure at Altitude in a Single-Engine Helicopter
Area of Operation VIII. Emergency Operations
PH.VIII.C — Approach and Landing with One Engine Inoperative (OEI) (Simulated) (Multiengine Helicopter Only)
Area of Operation VIII. Emergency Operations
PH.VIII.D — Systems and Equipment Malfunctions
Area of Operation VIII. Emergency Operations