Aviation Dictionary

Concentric rings

Dashed-line circles depicted in the plan view of IAP charts, outside of the reference circle, that show en route and feeder facilities.

Dictionary Term

Concentric rings

Definition

Dashed-line circles depicted in the plan view of IAP charts, outside of the reference circle, that show en route and feeder facilities.

References

Instrument Flying Handbook, Federal Aviation Administration, 2014
Pilot's Handbook of Aeronautical Knowledge, Federal Aviation Administration, 2023