6. Helicopter Route Charts. A three-color
chart series which shows current aeronautical
information useful to helicopter pilots navigating in
areas with high concentrations of helicopter activity.
Information depicted includes helicopter routes, four
classes of heliports with associated frequency and
lighting capabilities, NAVAIDs, and obstructions. In

addition, pictorial symbols, roads, and easily
identified geographical features are portrayed.
Helicopter charts have a longer life span than other
chart products and may be current for several years.
Helicopter Route Charts are updated as requested by
the FAA. Scale 1 inch = 1.71 nm/1:125,000. 34 x 30
inches folded to 5 x 10 inches. (See FIG 9-1-4.)

FIG 9-1-4

Helicopter Route Charts

b. IFR Navigation Charts.
1. IFR En Route Low Altitude Charts
(Conterminous U.S. and Alaska). En route low
altitude charts provide aeronautical information for
navigation under IFR conditions below 18,000 feet
MSL. This four-color chart series includes airways;
limits of controlled airspace; VHF NAVAIDs with
frequency, identification, channel, geographic coordinates; airports with terminal air/ground

9-1-4

communications; minimum en route and obstruction
clearance altitudes; airway distances; reporting
points; special use airspace; and military training
routes. Scales vary from 1 inch = 5nm to 1 inch =
20 nm. 50 x 20 inches folded to 5 x 10 inches. Charts
revised every 56 days. Area charts show congested
terminal areas at a large scale. They are included with
subscriptions to any conterminous U.S. Set Low (Full
set, East or West sets).
(See FIG 9-1-5 and FIG 9-1-6.)

Types of Charts Available