IFR Enroute Low Altitude Charts provide aeronautical information for navigation under instrument flight rules below 18,000 feet MSL. These four-color chart series includes:
Air Traffic Services
Airports that have an Instrument Approach Procedure or a minimum 3000' hard surface runway
Airways/Route Data
Cruising Altitudes
Fixes/ATC Reporting Points
Limits of controlled airspace
Military Training Routes
Off Route Obstruction Clearance Altitudes (OROCA)
Radio aids to navigation
RNAV Routes
Special Use Airspace Areas
Tabulations (MTRs, SUAs, MOAs, Airport data)
Area Charts, which show congested terminal areas at a large scale, are included with subscriptions to any conterminous U.S. Set Low (Full set, East or West sets). Charts are revised every 56 days.
