Federal Aviation Administration

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Instrument Flight Rules (IFR) Enroute Low Altitude Charts

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  • | Updated: 10:14 am ET January 07, 2010
Portion of a U.S. IFR Enroute Low Altitude Chart
Low Altitude Chart
Portion of an Area Chart
Area Chart

Effective October 25, 2007, the FAA reconfigured the Enroute Low series for the Conterminous U.S. Please see the New Configuration

Effective October 25, 2007, the FAA published the Enroute Low series for the Caribbean area. Please see the Caribbean series of enroute charts.

The Alaska series of enroute charts will remain unchanged.

IFR Enroute Low Altitude Charts provide aeronautical information for navigation under instrument flight rules below 18,000 feet MSL. This four-color chart series includes:

  • Airways
  • RNAV Routes
  • Limits of controlled airspace
  • VHF radio aids to navigation (frequency, identification, channel, geographic coordinates)
  • Airports that have an Instrument Approach Procedure or a minimum 3000' hard surface runway
  • Off Route Obstruction Clearance Altitudes (OROCA)
  • Reporting points
  • Special use airspace areas
  • Military Training Routes

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.

Caribbean Area Charts:

  • A-1 consists of area charts for: Buenos Aires (scale 1" = 13 NM) Santiago (1" = 12 NM) Lima (1" = 18 NM) Rio de Janeiro (1" = 10 NM) Guatemala City (1" = 17 NM) Antigua Island-Ascension Island Inset (1" = 228 NM)

  • A-2 consists of area charts for: Miami-Nassau (1"= 19 NM) Bogota (1"= 15 NM) Mexico City (1" = 23 NM) Panama (1" = 8 NM) Central America-Pacific Ocean Inset (1" = 52 NM)

  • A-3 consists of an area chart for the Dominican Republic/Puerto Rico (1" = 16 NM)
Scale Information
Chart Type Nautical miles/inch
Instrument Flight Rules (IFR) Enroute Low Altitude Chart for the Conterminous U.S. Varies from
5 to 20

* Note: If ordering through NACO, please provide the FAA Product IDs with your order for faster service.

Product Name and FAA Product ID
Low Altitude Enroute
(U.S.)
Product Product ID
L 1/2 ELUS1
L 3/4 ELUS3
L 5/6 ELUS5
L 7/8 ELUS7
L 9/10 ELUS9
L 11/12 ELUS11
L 13/14 ELUS13
L 15/16 ELUS15
L 17/18 ELUS17
L 19/20 ELUS19
* L 21/22 ELUS21
L 23/24 ELUS23
L 25/26 ELUS25
L 27/28 ELUS27
L 29/30 ELUS29
L 31/32 ELUS31
L 33/34 ELUS33
L 35/36 ELUS35
FULL SET ELUSSET
EAST SET ELUSE
WEST SET ELUSW
A 1/2 Area
Low Altitude Enroute
(Alaska)
Product Product ID
ALASKA 1/2 ELAK1
ALASKA 3/4 ELAK3
FULL SET ELAKSET
Low Altitude Enroute
(Caribbean)
Product Product ID
CARIB 1/2 ELCB1
CARIB 3/A3 ELCB3
CARIB 5/6 ELCB5
CARIB A1/A2 ELCBA1
FULL SET ELCBSET

* Note: L-21 is intended for offshore navigation only. Detailed onshore information has been intentionally omitted. Refer to charts L-19/20, L-22, L-23/24 for detailed onshore information.