Definition
An arrival operation in which the aircraft is not under radar surveillance or radar control by ATC during the approach phase. The pilot navigates to the destination using published procedures and position reports rather than radar vectors, and ATC provides separation based on the pilot's reported position over fixes.
Plain English
Arriving at an airport without ATC watching you on radar. You fly the published route yourself and tell the controller where you are, and they keep you separated from other traffic based on what you report.
Context Anchor
Seen in ATC and arrival procedure discussions, especially when arriving at airports or areas where radar coverage is limited or not being used.
Derivation
Nonradar' simply means 'without radar.' The term flags the absence of the radar coverage most pilots assume is always present in modern ATC operations.
Why Pilots Care
Requires pilots to follow precise timing or reported distances instead of radar vectors, directly affecting approach spacing and workload.
Intuition Check
Do not assume “nonradar arrival” means the airport has no control tower or that no one is managing traffic. It means this arrival is not being handled using radar contact with the aircraft.
Example Sentence 1
Because the destination airport was beyond radar coverage, the flight was handled as a nonradar arrival, and the pilot made position reports over each named fix on the approach.
Example Sentence 2
During the nonradar arrival, the pilot reported passing the fix at the assigned time to maintain separation.