# CA.X.D — Instrument Approach and Landing with an Inoperative Engine (Simulated) (AMEL, AMES) — Commercial Pilot Airplane ACS

> CA.X.D from FAA-S-ACS-7B, including the official objective, references, notes, and 20 exact knowledge, risk-management, and skill descriptions.

Canonical HTML: [https://www.check-ride.ai/acs/airplane/commercial-pilot/ca-x-d](https://www.check-ride.ai/acs/airplane/commercial-pilot/ca-x-d)

Site reference: [https://www.check-ride.ai/llms.txt](https://www.check-ride.ai/llms.txt)

## Official Task context

- FAA document: Commercial Pilot for Airplane Category Airman Certification Standards
- Identifier: FAA-S-ACS-7B
- Published source date: November 2023
- Aircraft category: Airplane
- Certificate or rating: Commercial Pilot
- Area of Operation: Area of Operation X. Multiengine Operations
- Task: Task D. Instrument Approach and Landing with an Inoperative Engine (Simulated) (AMEL, AMES)
- Task code prefix: CA.X.D
- Official references: FAA-H-8083-2, FAA-H-8083-3, FAA-H-8083-15, FAA-H-8083-25; FAA-P-8740-66; POH/AFM
- FAA source library: https://www.faa.gov/training_testing/testing/acs

## Official Task objective

To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with executing a published instrument approach solely by reference to instruments with one engine inoperative.

## Knowledge elements

- **CA.X.D.K1** — Instrument approach procedures with one engine inoperative.

## Risk management elements

- **CA.X.D.R1** — Potential engine failure during approach and landing.
- **CA.X.D.R2** — Collision hazards.
- **CA.X.D.R3** — Configuring the airplane.
- **CA.X.D.R4** — Low altitude maneuvering, including stall, spin, or controlled flight into terrain (CFIT).
- **CA.X.D.R5** — Distractions, task prioritization, loss of situational awareness, or disorientation.
- **CA.X.D.R6** — Performing a go-around/rejected landing with an engine failure.

## Skills elements

- **CA.X.D.S1** — Promptly recognize an engine failure and maintain positive aircraft control.
- **CA.X.D.S2** — Set the engine controls, reduce drag, identify and verify the inoperative engine, and simulate feathering of the propeller on the inoperative engine (evaluator should then establish zero thrust on the inoperative engine).
- **CA.X.D.S3** — Use flight controls in the proper combination as recommended by the manufacturer, or as required to maintain best performance, and trim as required.
- **CA.X.D.S4** — Follow the manufacturer’s recommended emergency procedures and complete the appropriate checklist.
- **CA.X.D.S5** — Monitor the operating engine and aircraft systems and make adjustments as necessary.
- **CA.X.D.S6** — Request and follow an actual or a simulated air traffic control (ATC) clearance for an instrument approach.
- **CA.X.D.S7** — Maintain altitude ±100 feet or minimum sink rate if applicable, airspeed ±10 knots, and selected heading ±10°.
- **CA.X.D.S8** — Establish a rate of descent that ensures arrival at the minimum descent altitude (MDA) or decision altitude (DA)/decision height (DH) with the airplane in a position from which a descent to a landing on the intended runway can be made, either straight in or circling as appropriate.
- **CA.X.D.S9** — On final approach segment, maintain vertical (as applicable) and lateral guidance within ¾-scale deflection.
- **CA.X.D.S10** — Avoid loss of airplane control or attempted flight contrary to the operating limitations of the airplane.
- **CA.X.D.S11** — Comply with the published criteria for the aircraft approach category if circling.
- **CA.X.D.S12** — Execute a landing.
- **CA.X.D.S13** — Complete the appropriate checklist(s).

## Difficulty methodology

Difficulty calibration is ongoing for this Task. Observed difficulty is a privacy-thresholded check-ride.ai mock-oral practice proxy, not an FAA practical-test pass or fail rate. Underlying sample sizes and the private reporting threshold are not published.

## Official Task notes

- See Appendix 2: Safety of Flight and Appendix 3: Aircraft, Equipment, and Operational Requirements & Limitations for information related to this Task.
- For non-amphibious seaplanes, this task applies only when the applicant has immediate access to an instrument approach to a waterway.

## Use in practice

A mock examiner can ask a pilot to explain the published elements, apply them to the configured aircraft and airport context, identify risks, and defend a decision. Practice prompts are not represented as actual FAA examiner scripts or predictions of the questions a candidate will receive.