CA.IV.L — Rough Water Approach and Landing (ASES, AMES)
CA.IV.L for the Commercial Pilot Airplane ACS: official objective, references, and 27 exact knowledge, risk-management, and skill descriptions.
FAA-S-ACS-7B, 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 | Commercial Pilot |
|---|---|
| Aircraft category | Airplane |
| Area of operation | Area of Operation IV. Takeoffs, Landings, and Go-Arounds |
| Task | Task L. Rough Water Approach and Landing (ASES, AMES) |
| Task code prefix | CA.IV.L |
| Official references | AIM; FAA-H-8083-2, FAA-H-8083-3, FAA-H-8083-23, FAA-H-8083-25; POH/AFM |
| FAA document | FAA-S-ACS-7B — Commercial Pilot for Airplane Category Airman Certification Standards |
| FAA source library | Open the official ACS library |
Official task objective
To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with rough water approach and landing.
What the ACS code means
- CA identifies the ACS standard family used for this Commercial Pilot Airplane document.
- IV identifies Takeoffs, Landings, and Go-Arounds, the Area of Operation.
- L identifies Rough Water Approach and Landing (ASES, AMES), 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 |
|---|---|---|
| CA.IV.L.K1 | A stabilized approach, including energy management concepts. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| CA.IV.L.K2 | Effects of atmospheric conditions, including wind, on approach and landing performance. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| CA.IV.L.K3 | Wind correction techniques on approach and landing. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| CA.IV.L.K4 | When and why rough water techniques are used. | Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant. |
| CA.IV.L.K5 | How to perform a proper rough water approach and landing. | 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 |
|---|---|---|
| CA.IV.L.R1 | Selection of approach path and touchdown area based on pilot capability, airplane performance and limitations, available distance, and wind. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| CA.IV.L.R2 | Effects of: | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| CA.IV.L.R2a | a. Crosswind | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| CA.IV.L.R2b | b. Windshear | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| CA.IV.L.R2c | c. Tailwind | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| CA.IV.L.R2d | d. Wake turbulence | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| CA.IV.L.R2e | e. Water surface/condition | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| CA.IV.L.R3 | Planning for a go-around and rejected landing. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| CA.IV.L.R4 | Collision hazards. | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| CA.IV.L.R5 | Low altitude maneuvering, including stall, spin, or controlled flight into terrain (CFIT). | Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision. |
| CA.IV.L.R6 | 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. |
| CA.IV.L.R7 | Gear position in an amphibious airplane. | 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 |
|---|---|---|
| CA.IV.L.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. |
| CA.IV.L.S2 | 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. |
| CA.IV.L.S3 | Ensure the airplane is aligned with the correct/assigned waterway. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| CA.IV.L.S4 | Scan the landing area for traffic and obstructions. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| CA.IV.L.S5 | Select and aim for a suitable touchdown point considering the wind conditions, landing surface, and obstructions. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| CA.IV.L.S6 | Establish the recommended approach and landing configuration, airspeed, and trim, and adjust pitch attitude and power as required to maintain a stabilized approach. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| CA.IV.L.S7 | Maintain manufacturer’s published approach airspeed or in its absence not more than 1.3 times the stalling speed or the minimum steady flight speed in the landing configuration (VSO), ±5 knots with gust factor applied. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| CA.IV.L.S8 | Maintain directional control and appropriate crosswind correction throughout the approach and landing. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| CA.IV.L.S9 | Make smooth, timely, and correct power and control adjustments to maintain proper pitch attitude and rate of descent to touchdown. | Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test. |
| CA.IV.L.S10 | Contact the water in a proper pitch attitude, considering the type of rough water. | 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
- If a rough water condition does not exist, the applicant must be evaluated by simulating the Task.
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 Commercial Pilot Airplane ACS tasks
60 task-level resources from FAA-S-ACS-7B.
- CA.IV.K — Rough Water Takeoff and Climb (ASES, AMES)
Area of Operation IV. Takeoffs, Landings, and Go-Arounds
- CA.IV.M — Power-Off 180° Accuracy Approach and Landing (ASEL, ASES)
Area of Operation IV. Takeoffs, Landings, and Go-Arounds
- CA.IV.A — Normal Takeoff and Climb
Area of Operation IV. Takeoffs, Landings, and Go-Arounds
- CA.IV.B — Normal Approach and Landing
Area of Operation IV. Takeoffs, Landings, and Go-Arounds
- CA.IV.C — Soft-Field Takeoff and Climb (ASEL)
Area of Operation IV. Takeoffs, Landings, and Go-Arounds
- CA.IV.D — Soft-Field Approach and Landing (ASEL)
Area of Operation IV. Takeoffs, Landings, and Go-Arounds