Airspace Flashcards
Class A Altitudes
Starts at 18000 feet, ends at 60000 (Class E above FL600)
Class A Appearance on Sectional Chart
Not depicted on charts (Its everywhere above 18000 feet)
Class A Entry Requirements
Two-way radio
Mode C (Altitude encoding) transponder
Distance measuring equipment (DME) required about FL240
IFR Flight Plan (No VFR Traffic)
Class B Dimensions
Upside-down wedding cake
Generally, from the surface to 10000 feet
Lateral dimensions are specific to the airport area
Class B Appearance on Sectional Chart
Blue Solid lines (circles) on VFR Sectional Charts
Class B Entry Requirements
o Clearance to enter to Class Bravo airspace. Need to hear the word “Cleared” to enter the airspace
o Traffic separation is always provided
o Two-way radio
o Mode C (altitude encoding) transponder within the Mode C Veil (within 30 NM)
o Required to be a private pilot, or a student pilot with an endorsement to from a CFI
o Remain clear of clouds
o Speed is limited to 200 kts
o 3 SM visibility
Class C Appearance on Sectional Chart
Dark magenta line (circle) on VFR sectional chart
Class C Dimensions
- Not as complex as Class B, but has two volumes
- Inner cylinder is 5NM radius (10 NM Diameter)
- Generally, from the surface to 4000 ft AGL
- Outer cylinder is 10NM radius usually from 1200 feet AGL to 4000 feet AGL
Class C Entry Requirements
o Two-way radio communication (need to state your tail number)
o Mode C (Altitude encoding) transponder
o Speed limited to 200 kts when within 4 miles and 2500 feet AGL from the airport
o VFR minimums:
500 ft below, 1000 ft above, and 2000 ft laterally from clouds
3 SM visibility
Class D Appearance on Sectional Chart
Dashed blue line (circle) on VFR sectional chart
Class D Dimensions
Single cylinder usually from surface to 2500 feet AGL. Radius varies depending on airport. It is based on the instrument procedures available at the airport
Class D Reverting to Class E
Most Class D airports have control towers that operate during the day. Once tower operation stops, the airspace reverts to class E
Class D Entry Requirements
o Two-way ration communication (Need to say your tail number)
o Speed limited to 200 kts when within 4 miles and below 2500 feet AGL
o VFR minimums:
500 ft below, 1000 ft above, and 2000 ft laterally from clouds
3 SM visibility
Where is Class E Airspace?
All airspace that is controlled and NOT A, B, C, or D
• Most of the airspace in the nation airspace system
What is the Altitude of Class E Airspace?
Class E airspace exists at 1200 ft AGL unless otherwise designated.
If not depicted on a chart, Class E starts at 14500 ft MSL
How is Class E Airspace shown on a Sectional Chart if it begins below 1200 feet AGL?
o 700 feet AGL (shown as shaded magenta line or circle on VFR chart) o Surface (Shown as dashed magenta line or circle on VFR chart) • It can be depicted as a Blue zipper line which could have non-standard altitudes
Class E Entry Requirements
o No two-way radio communication
o No equipment required
o Controlled airspace means service is still provided to pilots
o Below 10000 feet MSL the speed is limited to 250 kts
o VFR minimums Under 10000 ft:
500 ft below, 1000 ft above, and 2000 ft laterally from clouds
3 SM visibility
o VFR minimums above 10000 ft:
1000 ft below, 1000 ft above, and 1 SM laterally from clouds
5 SM visibility
Class G Airspace
Uncontrolled airspace, which means no services are provided to aircraft
Everything that is not covered by A, B, C, D, E
Generally below Class E
Class G VFR Minimums Day Less than 1200 ft AGL or less:
Clear of Clouds
1 SM of Visibility
Class G VFR Minimums Night Less than 1200 ft AGL or less:
500 ft below, 1000 ft above, and 2000 ft laterally from clouds
3 SM visibility
Class G VFR Minimums Day more than 1200 ft AGL less than 10000 ft MSL:
500 ft below, 1000 ft above, and 2000 ft laterally from clouds
1 SM of Visibility
Class G VFR Minimums Night more than 1200 ft AGL less than 10000 ft MSL:
500 ft below, 1000 ft above, and 2000 ft laterally from clouds
3 SM of Visibility
Class G VFR Minimums more than 1200 ft AGL and above 10000 ft MSL:
1000 ft below, 1000 ft above, and 2000 ft 1 SM from clouds
5 SM of Visibility
Special VFR
Pilots can fly when conditions are less than VFR, but more than IFR with a special VFR clearance.
Visibility must be at least 1 SM.
Remain clear of clouds.
