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Types of Charts Available

2. IFR En Route High Altitude Charts

(Conterminous U.S. and Alaska). En route high

altitude charts are designed for navigation at or above

18,000 feet MSL. This four−color chart series

includes the jet route structure; VHF NAVAIDs with

frequency, identification, channel, geographic coor-

dinates; selected airports; reporting points. Scales

vary from 1 inch = 45 nm to 1 inch = 18 nm. 55 x 20

inches folded to 5 x 10 inches. Revised every 56 days.

(See FIG 9−1−7 and FIG 9−1−8.)

FIG 9−1−7

En Route High Altitude Charts for the Conterminous U.S.

FIG 9−1−8

Alaskan En Route High Altitude Chart