Avidyne IFD540 Pilot's Manual page 81

Map Symbol
Map Pages 3-5
Item
Single high
obstacle
Grouping of high
obstacles
Towered airport,
hard
Towered airport,
soft
Towered airport,
water
Non-towered
airport, hard
Non-towered
airport, soft
Non-towered
airport, water
NDB
VOR
Intersection
Description
1000' AGL or higher
2 or more high obstacles
(1000' AGL or higher)
within 1 nm of each other
If runway orientation
known, they are also
depicted on the airfield
symbol
If runway orientation
known, they are also
depicted on the airfield
symbol
All NDBs in nav database
All VORs in nav
database
All intersections in nav
database