# AA.IV.B — Recovery from Unusual Flight Attitudes — Airline Transport Pilot Airplane ACS

> AA.IV.B from FAA-S-ACS-11A, including the official objective, references, notes, and 14 exact knowledge, risk-management, and skill descriptions.

Canonical HTML: [https://www.check-ride.ai/acs/airplane/airline-transport-pilot/aa-iv-b](https://www.check-ride.ai/acs/airplane/airline-transport-pilot/aa-iv-b)

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

## Official Task context

- FAA document: Airline Transport Pilot and Type Rating for Airplane Category Airman Certification Standards
- Identifier: FAA-S-ACS-11A
- Published source date: November 2023
- Aircraft category: Airplane
- Certificate or rating: Airline Transport Pilot
- Area of Operation: Area of Operation IV. In-flight Maneuvers
- Task: Task B. Recovery from Unusual Flight Attitudes
- Task code prefix: AA.IV.B
- Official references: AC 120-111; FAA-H-8083-2, FAA-H-8083-15, FAA-H-8083-25; FSB Report (type specific); 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 recovering from unusual flight attitudes solely by reference to instruments.

## Knowledge elements

- **AA.IV.B.K1** — Procedures for recovery from unusual flight attitudes.
- **AA.IV.B.K2** — Unusual flight attitude causal factors, including physiological factors, system and equipment failures, and environmental factors.
- **AA.IV.B.K3** — The operating envelope and structural limitations for the aircraft.
- **AA.IV.B.K4** — Effects of engine location, wing design, and other specific design characteristics that could affect aircraft control during the recovery.

## Risk management elements

- **AA.IV.B.R1** — Situations that could lead to loss of control in-flight (LOC-I) or unusual attitudes in-flight (e.g., stress, task saturation, inadequate instrument scan distractions, and spatial disorientation).
- **AA.IV.B.R2** — [Archived]
- **AA.IV.B.R3** — Operating envelope considerations.
- **AA.IV.B.R4** — Interpreting flight instruments.
- **AA.IV.B.R5** — Assessment of the unusual attitude.
- **AA.IV.B.R6** — Control input errors, inducing undesired aircraft attitudes.
- **AA.IV.B.R7** — Control application solely by reference to instruments.
- **AA.IV.B.R8** — Collision hazards.
- **AA.IV.B.R9** — Distractions, task prioritization, loss of situational awareness, or disorientation.

## Skills elements

- **AA.IV.B.S1** — Use proper instrument cross-check and interpretation to identify an unusual attitude (including both nose-high and nose-low) in flight, and apply the appropriate flight control, power input, and aircraft configuration in the correct sequence, to return to a stabilized level flight attitude.

## 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.