Legend (DIR/HAS)

EFD Boundary (0) HOU Boundary (1) IAH Boundary (2) EFD Airspace - Terrain (3) HOU Airspace - Terrain (4) IAH Airspace - Terrain (5) IAH Elevation Information (6) EFD and HOU Elevation Information (7) Airport Tiers (8) Tier 1 Tier 2 Tier 3