# CP.IX.B — Powerplant(s) Failure (Simulated) during Takeoff While in Semi-Wing-Borne Flight — Commercial Pilot Powered Lift ACS

> CP.IX.B from FAA-S-ACS-2, including the official objective, references, notes, and 20 exact knowledge, risk-management, and skill descriptions.

Canonical HTML: [https://www.check-ride.ai/acs/powered-lift/commercial-pilot/cp-ix-b](https://www.check-ride.ai/acs/powered-lift/commercial-pilot/cp-ix-b)

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

## Official Task context

- FAA document: Commercial Pilot for Powered-Lift Category Airman Certification Standards
- Identifier: FAA-S-ACS-2
- Published source date: November 2023
- Aircraft category: Powered Lift
- Certificate or rating: Commercial Pilot
- Area of Operation: Area of Operation IX. Emergency Operations
- Task: Task B. Powerplant(s) Failure (Simulated) during Takeoff While in Semi-Wing-Borne Flight
- Task code prefix: CP.IX.B
- Official references: FAA-H-8083-2, FAA-H-8083-25; Flight Manual
- 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 indications and pilot actions after powerplant(s) failure during takeoff while in semi-wing-borne flight in a multi-powerplant aircraft.

## Knowledge elements

- **CP.IX.B.K1** — The procedures used during a powerplant(s) failure on takeoff, the appropriate reference airspeeds, and the specific pilot actions required.
- **CP.IX.B.K2** — Operational considerations to include: aircraft performance (e.g., sideslip, bank angle, etc.), takeoff warning systems, runway length, surface conditions, density altitude, wake turbulence, environmental conditions, obstructions, and other related factors that could adversely affect safety.

## Risk management elements

- **CP.IX.B.R1** — Powerplant(s) failure.
- **CP.IX.B.R2** — Reaction to the loss of power from one or more powerplants.
- **CP.IX.B.R3** — Deceleration in a space-limited environment.
- **CP.IX.B.R4** — Windshear.
- **CP.IX.B.R5** — Dividing attention inside and outside the aircraft.
- **CP.IX.B.R6** — Runway incursion.
- **CP.IX.B.R7** — Distractions, task prioritization, loss of situational awareness, or disorientation.
- **CP.IX.B.R8** — Abnormal operations, including planning for.
- **CP.IX.B.R8a** — a. Rejected takeoff
- **CP.IX.B.R8b** — b. Powerplant failure in takeoff/climb phase of flight
- **CP.IX.B.R9** — Energy management.

## Skills elements

- **CP.IX.B.S1** — Recognize that a powerplant failure has occurred while performing a rolling takeoff.
- **CP.IX.B.S2** — Input the appropriate flight control(s) and configure the aircraft for maximum deceleration.
- **CP.IX.B.S3** — Maintain the operating powerplant(s) within acceptable operating limits.
- **CP.IX.B.S4** — Apply braking as appropriate.
- **CP.IX.B.S5** — Refer to the checklist to ensure that the emergency procedure was followed correctly.
- **CP.IX.B.S6** — Make radio calls as appropriate.
- **CP.IX.B.S7** — Use single-pilot resource management (SRM) or crew resource management (CRM), as appropriate.

## 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

- Note: See Appendix 2: Safety of Flight and Appendix 3: Aircraft, Equipment, and Operational Requirements & Limitations for information related to this Task.
- Note: This can be initiated during the takeoff roll in wheeled aircraft or during the transition to wing-borne flight following a vertical takeoff.

## 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.