HI.XII.B — Pinnacle Operations
HI.XII.B for the Flight Instructor Rotorcraft ACS: official objective, references, and 38 exact knowledge, risk-management, and skill descriptions.
FAA-S-ACS-29, November 2023. This study page does not replace the current FAA publication or an examiner's plan of action.
Official task context
| Certificate or rating | Flight Instructor |
|---|---|
| Aircraft category | Rotorcraft |
| Area of operation | Area of Operation XII. Special Operations |
| Task | Task B. Pinnacle Operations |
| Task code prefix | HI.XII.B |
| Official references | FAA-H-8083-2, FAA-H-8083-4, FAA-H-8083-9, FAA-H-8083-21, FAA-H-8083-25; POH/RFM |
| FAA document | FAA-S-ACS-29 — Flight Instructor for Rotorcraft Category Helicopter Rating Airman Certification Standards |
| FAA source library | Open the official ACS library |
Official task objective
To determine the applicant understands pinnacle operations, can apply that knowledge, manage associated risks, demonstrate appropriate skills, and provide effective instruction.
What the ACS code means
- HI identifies the ACS standard family used for this Flight Instructor Rotorcraft document.
- XII identifies Special Operations, the Area of Operation.
- B identifies Pinnacle 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
| ACS code | Official description | How a mock oral can probe it |
|---|---|---|
| HI.XII.B.K1 | Elements of pinnacle/platform operations. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| HI.XII.B.K2 | Effects of wind, weight, temperature, and density altitude. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| HI.XII.B.K3 | Suitable takeoff point and departure flight path during climb. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| HI.XII.B.K4 | Situations when a pinnacle/platform approach, landing and takeoff is recommended and factors related to aircraft performance. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| HI.XII.B.K5 | Elements of a high and low reconnaissance. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| HI.XII.B.K6 | Common 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
| ACS code | Official description | How a mock oral can probe it |
|---|---|---|
| HI.XII.B.R1 | Selection of approach path, termination point and departure path based on aircraft performance and limitations, and wind. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R2 | Effects of: | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R2a | a. Wind Direction | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R2b | b. Windshear | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R2c | c. Turbulence | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R3 | H/V diagram information. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R4 | Go-around. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R5 | Powerplant failure during approach/landing phase of flight. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R6 | Collision hazards. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R7 | Vortex ring state (VRS). | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R8 | Landing surface. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R9 | Low rotor rpm. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R10 | Dynamic rollover. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R11 | Ground resonance. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R12 | Loss of tail rotor effectiveness (LTE). | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R13 | Aircraft limitations. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R14 | Distractions, 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. |
| HI.XII.B.R15 | Forced landing. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| HI.XII.B.R16 | Main and tail rotor hazards for passengers. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
Skills elements
| ACS code | Official description | How a mock oral can probe it |
|---|---|---|
| HI.XII.B.S1 | Complete the appropriate checklist(s). | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S2 | Confirm power available meets or exceeds the power required for the selected arrival or departure profile(s). | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S3 | Make radio calls as appropriate. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S4 | Accomplish high and low reconnaissance. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S5 | Determine wind direction with or without visible wind direction indicators. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S6 | Select a suitable approach path, termination point, and departure path. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S7 | Select an approach path considering wind direction. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S8 | Track the selected approach path at an acceptable approach angle and rate of closure to the termination point. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S9 | Maintain powerplant and main rotor (Nr) speed within normal limits. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S10 | Accomplish a proper ground reconnaissance. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S11 | Terminate in a hover or on the surface, as appropriate. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S12 | Select a suitable takeoff point and consider factors affecting takeoff and climb performance under various conditions. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| HI.XII.B.S13 | Analyze 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.
Related ACS tasks
- All Flight Instructor Rotorcraft ACS tasks
65 task-level resources from FAA-S-ACS-29.
- HI.XII.A — Confined Area Operations
Area of Operation XII. Special Operations
- HI.XIII.A — After Landing, Parking, and Securing
Area of Operation XIII. Postflight Procedures