# IL.XV.C — Pinnacle Operations — Flight Instructor Powered Lift ACS

> IL.XV.C from FAA-S-ACS-27, including the official objective, references, notes, and 40 exact knowledge, risk-management, and skill descriptions.

Canonical HTML: [https://www.check-ride.ai/acs/powered-lift/flight-instructor/il-xv-c](https://www.check-ride.ai/acs/powered-lift/flight-instructor/il-xv-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 Powered-Lift Category Airman Certification Standards
- Identifier: FAA-S-ACS-27
- Published source date: November 2023
- Aircraft category: Powered Lift
- Certificate or rating: Flight Instructor
- Area of Operation: Area of Operation XV. Special Operations
- Task: Task C. Pinnacle Operations
- Task code prefix: IL.XV.C
- Official references: FAA-H-8083-2, FAA-H-8083-9, FAA-H-8083-25; Flight Manual
- FAA source library: https://www.faa.gov/training_testing/testing/acs

## Official Task objective

To determine the applicant understands pinnacle operations, can apply that knowledge, manage associated risks, demonstrate appropriate skills, and provide effective instruction.

## Knowledge elements

- **IL.XV.C.K1** — Elements of pinnacle/platform operations.
- **IL.XV.C.K2** — Effects of wind, weight, temperature, and density altitude.
- **IL.XV.C.K3** — Suitable takeoff point and departure flight path during climb.
- **IL.XV.C.K4** — Situations when a pinnacle/platform approach, landing and takeoff is recommended and factors related to aircraft performance.
- **IL.XV.C.K5** — Power requirements versus power available for the departure or arrival profile(s).
- **IL.XV.C.K6** — Elements of a high and low reconnaissance.
- **IL.XV.C.K7** — Common errors related to this Task.

## Risk management elements

- **IL.XV.C.R1** — Selection of approach path, termination point and departure path based on aircraft performance and limitations, and wind.
- **IL.XV.C.R2** — Effects of:
- **IL.XV.C.R2a** — a. Wind Direction
- **IL.XV.C.R2b** — b. Windshear
- **IL.XV.C.R2c** — c. Turbulence
- **IL.XV.C.R3** — H/V diagram information.
- **IL.XV.C.R4** — Go-around.
- **IL.XV.C.R5** — Powerplant failure during approach/landing phase of flight.
- **IL.XV.C.R6** — Collision hazards.
- **IL.XV.C.R7** — Vortex ring state (VRS).
- **IL.XV.C.R8** — Landing surface.
- **IL.XV.C.R9** — Dynamic rollover.
- **IL.XV.C.R10** — Ground resonance.
- **IL.XV.C.R11** — Aircraft limitations.
- **IL.XV.C.R12** — Low altitude maneuvering.
- **IL.XV.C.R13** — Distractions, task prioritization, loss of situational awareness, or disorientation.
- **IL.XV.C.R14** — Passenger exposure to thrust or exhaust.
- **IL.XV.C.R15** — Forced landing.
- **IL.XV.C.R16** — Power requirements versus power available for the departure or arrival profile(s).

## Skills elements

- **IL.XV.C.S1** — Complete the appropriate checklist(s).
- **IL.XV.C.S2** — Confirm power available meets or exceeds the power required for the selected departure or arrival profile(s).
- **IL.XV.C.S3** — Make radio calls as appropriate.
- **IL.XV.C.S4** — Accomplish high and low reconnaissance.
- **IL.XV.C.S5** — Determine wind direction with or without visible wind direction indicators.
- **IL.XV.C.S6** — Select a suitable approach path, termination point, and departure path.
- **IL.XV.C.S7** — Select an approach path considering wind direction.
- **IL.XV.C.S8** — Track the selected approach path at an acceptable approach angle and rate of closure to the termination point.
- **IL.XV.C.S9** — Maintain powerplant and thrust output within normal limits.
- **IL.XV.C.S10** — Execute a timely go-around if the approach cannot be made within the tolerances specified above or for any other condition that may result in an unsafe approach or landing.
- **IL.XV.C.S11** — Accomplish a proper ground reconnaissance.
- **IL.XV.C.S12** — Terminate in a hover or on the surface, as appropriate.
- **IL.XV.C.S13** — Select a suitable takeoff point and consider factors affecting takeoff and climb performance under various conditions.
- **IL.XV.C.S14** — 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.