# AI.IX.C — Chandelles (ASEL, ASES) — Flight Instructor Airplane ACS

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

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

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 IX. Performance and Ground Reference Maneuvers
- Task: Task C. Chandelles (ASEL, ASES)
- Task code prefix: AI.IX.C
- Official references: 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 chandelles, can apply that knowledge, manage associated risks, demonstrate appropriate skills, and provide effective instruction.

## Knowledge elements

- **AI.IX.C.K1** — Purpose of and procedures for chandelles.
- **AI.IX.C.K2** — Aerodynamics associated with chandelles, including:
- **AI.IX.C.K2a** — a. Maintaining coordinated flight
- **AI.IX.C.K2b** — b. Overbanking tendencies
- **AI.IX.C.K2c** — c. Maneuvering speed, including the impact of weight changes
- **AI.IX.C.K2d** — d. Accelerated stalls
- **AI.IX.C.K3** — Appropriate airplane configuration for maximum performance climb.
- **AI.IX.C.K4** — Proper pitch control required for continuously decreasing airspeed.
- **AI.IX.C.K5** — Common errors related to this Task.

## Risk management elements

- **AI.IX.C.R1** — Division of attention between aircraft control and orientation.
- **AI.IX.C.R2** — Collision hazards.
- **AI.IX.C.R3** — Low altitude maneuvering, including stall, spin, or controlled flight into terrain (CFIT).
- **AI.IX.C.R4** — Distractions, task prioritization, loss of situational awareness, or disorientation.
- **AI.IX.C.R5** — Uncoordinated flight.
- **AI.IX.C.R6** — Energy management.
- **AI.IX.C.R7** — Rate and radius of turn with confined area operations.

## Skills elements

- **AI.IX.C.S1** — Clear the area.
- **AI.IX.C.S2** — Select an altitude that allows the maneuver to be performed no lower than 1,500 feet above ground level (AGL).
- **AI.IX.C.S3** — Establish the appropriate entry configuration, power, and airspeed.
- **AI.IX.C.S4** — Establish the angle of bank at approximately 30°.
- **AI.IX.C.S5** — Simultaneously apply power and pitch to maintain a smooth, coordinated climbing turn, in either direction, to the 90° point, with a constant bank and continuously decreasing airspeed.
- **AI.IX.C.S6** — Begin a coordinated constant rate rollout from the 90° point to the 180° point maintaining power and a constant pitch attitude.
- **AI.IX.C.S7** — Complete rollout at the 180° point, ±10° just above a stall airspeed, and maintaining that airspeed momentarily avoiding a stall.
- **AI.IX.C.S8** — Resume a straight-and-level flight with minimum loss of altitude.
- **AI.IX.C.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.

## 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.