# IR.VIII.A — Checking Instruments and Equipment — Instrument Rating Airplane ACS

> IR.VIII.A from FAA-S-ACS-8C, including the official objective, references, notes, and 3 exact knowledge, risk-management, and skill descriptions.

Canonical HTML: [https://www.check-ride.ai/acs/airplane/instrument-rating/ir-viii-a](https://www.check-ride.ai/acs/airplane/instrument-rating/ir-viii-a)

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

## Official Task context

- FAA document: Instrument Rating – Airplane Airman Certification Standards
- Identifier: FAA-S-ACS-8C
- Published source date: November 2023
- Aircraft category: Airplane
- Certificate or rating: Instrument Rating
- Area of Operation: Area of Operation VIII. Postflight Procedures
- Task: Task A. Checking Instruments and Equipment
- Task code prefix: IR.VIII.A
- Official references: 14 CFR part 91; FAA-H-8083-2, FAA-H-8083-3, FAA-H-8083-25; 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 checking flight instruments and equipment during postflight.

## Knowledge elements

- **IR.VIII.A.K1** — Procedures for documenting in-flight/postflight discrepancies.

## Risk management elements

- **IR.VIII.A.R1** — Performance and documentation of postflight inspection and aircraft discrepancies.

## Skills elements

- **IR.VIII.A.S1** — Conduct a postflight inspection and document discrepancies and servicing requirements, if any.

## 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.