Aviation Dictionary

En Route Obstacle Clearance Areas

Obstacle clearance areas for en route planning are identified as primary, secondary, and turning areas, and they are designed to provide obstacle clearance route protection width for airways and routes.

Dictionary Term

En Route Obstacle Clearance Areas

Definition

Obstacle clearance areas for en route planning are identified as primary, secondary, and turning areas, and they are designed to provide obstacle clearance route protection width for airways and routes.

References

Instrument Procedures Handbook · Federal Aviation Administration · 2017