Plain English Meaning
An extra qualification added to a pilot's license that allows them to legally fly when they cannot see outside, by relying on the cockpit instruments alone.
Full Definition
An additional qualification added to a pilot certificate that authorizes the holder to operate an aircraft solely by reference to the flight instruments, including flight in clouds and other conditions where outside visual references are not available. It is earned by meeting specific training, flight experience, knowledge test, and practical test requirements set by the FAA.
Context Anchor
Seen in pilot qualifications, flight training records, and discussions of flying in clouds, , or other conditions that require .