Plain English Meaning
Help from a controller who is watching your aircraft on a radar screen and giving you instructions or information to keep you safe and on track.
Full Definition
Services provided by an air traffic controller using radar to help a pilot navigate, maintain separation from other aircraft and terrain, or recover from a difficult situation. This can include radar vectors (heading instructions), traffic advisories, position information, and guidance back on course or to an airport.
Context Anchor
You will encounter this term when studying how can help an aircraft that is lost, in , near , or needing guidance while flying on instruments.