Plain English Meaning
A simple wearable that stops the pilot from looking outside, so they have to fly using only the cockpit instruments. It is used during training to practise flying without seeing the ground or horizon.
Full Definition
A piece of training equipment, such as a hood or foggles, worn by a pilot to block the view outside the aircraft while leaving the flight instruments fully visible. It simulates flight in cloud or low visibility so the pilot must rely solely on the instruments for aircraft control and navigation.
Context Anchor
Seen in instrument training syllabi, lesson plans, and practice flights when a pilot is to fly without relying on the outside view.