General

UNDER THE HOOD.

UNDER THE HOOD

- Indicates that the pilot is using a hood to restrict visibility outside the cockpit while simulating instrument flight. An appropriately rated pilot is required in the other control seat while this operation is being conducted.

Source

FAA Pilot/Controller Glossary →

Related — General.

ACKNOWLEDGE ACKNOWLEDGE — Let me know that you have received and understood this message
ACROBATIC FLIGHT ACROBATIC FLIGHT
ACROBATIC FLIGHT [ICAO] ACROBATIC FLIGHT [ICAO]
ADMINISTRATOR ADMINISTRATOR
ADVISE INTENTIONS ADVISE INTENTIONS — Tell me what you plan to do
ADVISORY ADVISORY