# CA.VI.D — Lost Procedures — Commercial Pilot Airplane ACS

> CA.VI.D from FAA-S-ACS-7B, including the official objective, references, notes, and 11 exact knowledge, risk-management, and skill descriptions.

Canonical HTML: [https://www.check-ride.ai/acs/airplane/commercial-pilot/ca-vi-d](https://www.check-ride.ai/acs/airplane/commercial-pilot/ca-vi-d)

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

## Official Task context

- FAA document: Commercial Pilot for Airplane Category Airman Certification Standards
- Identifier: FAA-S-ACS-7B
- Published source date: November 2023
- Aircraft category: Airplane
- Certificate or rating: Commercial Pilot
- Area of Operation: Area of Operation VI. Navigation
- Task: Task D. Lost Procedures
- Task code prefix: CA.VI.D
- Official references: AIM; FAA-H-8083-2, FAA-H-8083-3, FAA-H-8083-25; VFR Navigation Charts
- 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 lost procedures and can take appropriate steps to achieve a satisfactory outcome if lost.

## Knowledge elements

- **CA.VI.D.K1** — Methods to determine position.
- **CA.VI.D.K2** — Assistance available if lost (e.g., radar services, communication procedures).

## Risk management elements

- **CA.VI.D.R1** — Collision hazards.
- **CA.VI.D.R2** — Distractions, task prioritization, loss of situational awareness, or disorientation.
- **CA.VI.D.R3** — Recording times over waypoints.
- **CA.VI.D.R4** — When to seek assistance or declare an emergency in a deteriorating situation.

## Skills elements

- **CA.VI.D.S1** — Use an appropriate method to determine position.
- **CA.VI.D.S2** — Maintain an appropriate heading and climb as necessary.
- **CA.VI.D.S3** — Identify prominent landmarks.
- **CA.VI.D.S4** — Use navigation systems/facilities or contact an ATC facility for assistance.
- **CA.VI.D.S5** — Select an appropriate course of action.

## 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.