# AI.X.F — Cross-Controlled Stall Demonstration (ASEL, ASES) — Flight Instructor Airplane ACS

> AI.X.F from FAA-S-ACS-25, including the official objective, references, notes, and 20 exact knowledge, risk-management, and skill descriptions.

Canonical HTML: [https://www.check-ride.ai/acs/airplane/flight-instructor/ai-x-f](https://www.check-ride.ai/acs/airplane/flight-instructor/ai-x-f)

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

## Official Task context

- FAA document: Flight Instructor for Airplane Category Airman Certification Standards
- Identifier: FAA-S-ACS-25
- Published source date: November 2023
- Aircraft category: Airplane
- Certificate or rating: Flight Instructor
- Area of Operation: Area of Operation X. Slow flight, Stalls, and Spins
- Task: Task F. Cross-Controlled Stall Demonstration (ASEL, ASES)
- Task code prefix: AI.X.F
- Official references: AC 61-67; FAA-H-8083-2, FAA-H-8083-3, FAA-H-8083-9, FAA-H-8083-25; POH/AFM
- FAA source library: https://www.faa.gov/training_testing/testing/acs

## Official Task objective

To determine the applicant understands cross-controlled stalls, can apply that knowledge, manage associated risks, demonstrate appropriate skills, and provide effective instruction.

## Knowledge elements

- **AI.X.F.K1** — Aerodynamics of cross-controlled stalls.
- **AI.X.F.K2** — Flight situations where unintentional cross-controlled stalls may occur.
- **AI.X.F.K3** — Recognition of cross-controlled stalls.
- **AI.X.F.K4** — Entry procedure and minimum entry altitude.
- **AI.X.F.K5** — Recovery procedure.
- **AI.X.F.K6** — Common errors related to this Task.

## Risk management elements

- **AI.X.F.R1** — Stall recovery procedure.
- **AI.X.F.R2** — Effect of environmental elements on airplane performance related to cross-controlled stalls (e.g., turbulence, microbursts, and high-density altitude).
- **AI.X.F.R3** — Collision hazards.
- **AI.X.F.R4** — Aircraft limitations.
- **AI.X.F.R5** — Distractions, task prioritization, loss of situational awareness, or disorientation.

## Skills elements

- **AI.X.F.S1** — Clear the area.
- **AI.X.F.S2** — Select an entry altitude that allows the Task to be completed no lower than 3,000 feet above ground level (AGL).
- **AI.X.F.S3** — Configure the airplane (with gear down) and close the throttle.
- **AI.X.F.S4** — Establish a normal glide airspeed and trim the airplane.
- **AI.X.F.S5** — Roll into a medium-banked turn, apply excess rudder in the turn while holding bank constant with opposite aileron input, and add elevator pressure to keep the nose from lowering.
- **AI.X.F.S6** — Acknowledge the cues at the first indication of a stall (e.g., aircraft buffet, stall horn, etc.).
- **AI.X.F.S7** — Recover at the first indication of a stall or after a full stall has occurred, as specified by the evaluator.
- **AI.X.F.S8** — Describe and demonstrate conditions that lead to a cross-controlled stall for future avoidance.
- **AI.X.F.S9** — Analyze and correct common errors related to this Task.

## 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.