Avidyne IFD440 - Page 120

IFD400 Series Pilot Guide
3-8 Map Subsystem
Map Symbol
Item
Description
Class A
Each boundary of Class
A airspace (solid red
line)
Class B
Each boundary of Class
B airspace (solid blue)
Class C
Each boundary of Class
C airspace (solid
magenta)
Class D
Each boundary of Class
D airspace (dashed blue)
Victor or Jet
Airways
All Victor and/or Jet
airways (solid blue-gray)
Terrain scale
Indicates highest and
lowest limits of the
terrain in displayed area
in hundreds of feet.
Legend colors in
between these values
represent terrain
elevations. Blue
obstacle clearance
number shows the top of
the highest obstacle,
when greater than the
highest displayed terrain.