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CA.II.E — Taxiing and Sailing (ASES, AMES)

CA.II.E for the Commercial Pilot Airplane ACS: official objective, references, and 23 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

CA.II.E official ACS context
Certificate or ratingCommercial Pilot
Aircraft categoryAirplane
Area of operationArea of Operation II. Preflight Procedures
TaskTask E. Taxiing and Sailing (ASES, AMES)
Task code prefixCA.II.E
Official referencesAC 91-73; AIM; Chart Supplements; FAA-H-8083-2, FAA-H-8083-3, FAA-H-8083-23, FAA-H-8083-25; POH/AFM
FAA documentFAA-S-ACS-7B — Commercial Pilot for Airplane Category 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 taxiing and sailing operations, including runway incursion avoidance.

What the ACS code means

  • CA identifies the ACS standard family used for this Commercial Pilot Airplane document.
  • II identifies Preflight Procedures, the Area of Operation.
  • E identifies Taxiing and Sailing (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

Official ACS knowledge items and mock-oral treatment
ACS codeOfficial descriptionHow a mock oral can probe it
CA.II.E.K1Airport information resources, including Chart Supplements, airport diagram, and appropriate references.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
CA.II.E.K2Taxi instructions/clearances.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
CA.II.E.K3Airport/seaplane base markings, signs, and lights.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
CA.II.E.K4Visual indicators for wind.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
CA.II.E.K5Airplane lighting.Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
CA.II.E.K6Procedures for:Explain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
CA.II.E.K6aa. Appropriate flight deck activities during taxiing or sailingExplain the element, apply it to a scenario, and connect the answer to current references or aircraft information when relevant.
CA.II.E.K6bb. Radio communications at towered and nontowered seaplane basesExplain 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
CA.II.E.R1Activities and distractions.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
CA.II.E.R2Porpoising and skipping.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
CA.II.E.R3Low visibility taxi and sailing operations.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
CA.II.E.R4Other aircraft, vessels, and hazards.Work through a scenario by identifying the hazard, evaluating the risk, and explaining a practical mitigation or decision.
CA.II.E.R5Confirmation or expectation bias as related to taxi instructions.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
CA.II.E.S1Receive and correctly read back clearances/instructions, if applicable.Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test.
CA.II.E.S2Use an appropriate airport diagram or taxi chart, if published.Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test.
CA.II.E.S3Comply with seaplane base/airport/taxiway markings, signals, and signs.Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test.
CA.II.E.S4Depart the dock/mooring buoy or beach/ramp in a safe manner, considering wind, current, traffic, and hazards.Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test.
CA.II.E.S5Complete 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.II.E.S6Position the flight controls, flaps, doors, water rudders, and power correctly for the existing conditions to follow the desired course while sailing and to prevent or correct for porpoising and skipping during step taxi.Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test.
CA.II.E.S7Exhibit procedures for steering and maneuvering while maintaining proper situational awareness and desired orientation, path, and position while taxiing using idle, plow, or step taxi technique, 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.II.E.S8Plan and follow the most favorable taxi or sailing course for current conditions.Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test.
CA.II.E.S9Abide by right-of-way rules, maintain positive airplane control, proper speed, and separation between other aircraft, vessels, and persons.Describe the procedure, interpretation, or decision process that can be discussed during an oral. Physical aircraft performance remains part of the practical test.
CA.II.E.S10Comply with applicable taxi elements in Task D if the practical test is conducted in an amphibious airplane.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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