2. Class “A” Airspace
• From 18,000 MSL to FL600
• Must set your altimeter to 29.92 at 18K MSL
• Must be IFR Pilot and Aircraft
• Must be on an IFR Flight Plan
• DME above FL240
• RVSM above FL290
3. Questions
• Why 18K MSL and not FL180?
• Figure this; What if you were VFR at 17,500
MSL and the local altimeter was 29.42?
4. Class “B” Airspace
• How does it look on a sectional?
– Big & Blue, blue rings or thick lines
– Some resemble an upside down wedding cake
5. Class “B” Airspace
• Dimensions (Typical)
– Surface to 10,000’ MSL
– 30 NM radius from main airport
– Usually has different “floors”
6. Class “B” Airspace
• What do you need to enter it?
– 2 way radio
– Operable Mode C transponder
– Clearance
7. Can You Enter the BRAVO??
• N9185S, turn left heading 270, descend and
maintain four thousand five hundred, traffic at
your two o'clock position and 2 miles.
Peachtree DeKalb airport in on your twelve
and one zero miles, advise the airport in site.
8. Class “B” Airspace
• VFR Weather Minimums
– 3 statute miles visibility
– Remain Clear of Clouds
– No Special VFR here
17. Can you Enter the CHARLIE??
• N9185S, turn left heading one eight zero,
descend and maintain four thousand five
hundred for traffic. The Columbus airport in
on your twelve and one five miles, advise the
airport in site