# AA.V.B — Clean Configuration Stall Prevention — Airline Transport Pilot Airplane ACS

> AA.V.B from FAA-S-ACS-11A, including the official objective, references, notes, and 21 exact knowledge, risk-management, and skill descriptions.

Canonical HTML: [https://www.check-ride.ai/acs/airplane/airline-transport-pilot/aa-v-b](https://www.check-ride.ai/acs/airplane/airline-transport-pilot/aa-v-b)

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

## Official Task context

- FAA document: Airline Transport Pilot and Type Rating for Airplane Category Airman Certification Standards
- Identifier: FAA-S-ACS-11A
- Published source date: November 2023
- Aircraft category: Airplane
- Certificate or rating: Airline Transport Pilot
- Area of Operation: Area of Operation V. Stall Prevention
- Task: Task B. Clean Configuration Stall Prevention
- Task code prefix: AA.V.B
- Official references: AC 61-67, AC 120-109; FAA-H-8083-2, FAA-H-8083-3, FAA-H-8083-25; FSB Report (type specific);
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 stalls in a clean configuration.

## Knowledge elements

- **AA.V.B.K1** — Aerodynamics associated with stalls in a clean configuration, including the relationship between angle of attack, airspeed, load factor, power setting, aircraft weight and balance, and aircraft attitude.
- **AA.V.B.K2** — Stall characteristics as they relate to airplane design, and recognition impending stall and full stall indications using sight, sound, or feel.
- **AA.V.B.K3** — Factors and situations that can lead to a stall during cruise flight and actions that can be taken to prevent it.
- **AA.V.B.K4** — Effects of autoflight, flight envelope protection in normal and degraded modes, and unexpected disconnects of the autopilot or autothrottle/autothrust, if applicable to the aircraft used for the evaluation.
- **AA.V.B.K5** — Fundamentals of stall recovery.
- **AA.V.B.K6** — Effects of altitude on performance (e.g., thrust available) and flight control effectiveness during a recovery.

## Risk management elements

- **AA.V.B.R1** — Factors and situations that could lead to an inadvertent stall, spin, and loss of control during cruise flight.
- **AA.V.B.R2** — Range and limitations of stall warning indicators (e.g., aircraft buffet, stall horn, stick shaker, etc.).
- **AA.V.B.R3** — Stall warning awareness.
- **AA.V.B.R4** — Stall recovery procedure.
- **AA.V.B.R5** — Secondary stalls, accelerated stalls, elevator trim stalls, and cross-control stalls.
- **AA.V.B.R6** — Effect of environmental elements on aircraft performance while in cruise flight as it relates to stalls (e.g., turbulence, microbursts, and high-density altitude).
- **AA.V.B.R7** — Collision hazards including aircraft and terrain.
- **AA.V.B.R8** — Distractions, task prioritization, loss of situational awareness, or disorientation.

## Skills elements

- **AA.V.B.S1** — Clear the area and select an entry altitude that allows the recovery to be completed no lower than 3,000 feet above ground level (AGL) (non-transport category airplanes) or 5,000 feet AGL (transport category airplanes).
- **AA.V.B.S2** — [Archived]
- **AA.V.B.S3** — While in cruise flight, maintain coordinated flight in simulated or actual instrument conditions throughout the maneuver.
- **AA.V.B.S4** — Either manually or with the autopilot engaged, smoothly adjust pitch attitude, bank angle (15°-30°), and power setting in accordance with evaluator’s instructions to an impending stall.
- **AA.V.B.S5** — Acknowledge the cue(s) and promptly recover at the first indication of an impending stall (e.g., buffet, stall horn, stick shaker, etc.).
- **AA.V.B.S6** — Execute a stall recovery in accordance with procedures set forth in the Pilot's Operating Handbook (POH)/Flight Manual (FM).
- **AA.V.B.S7** — Return to the desired flight path as specified by the evaluator.

## 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.

## 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.