National airspace system (NAS)
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National Airspace System(NAS) Review Class A airspace extends from 18,000 feet MSL to FL600. Pilots must be IFR certified and flying an IFR flight plan. Class B airspace surrounds large airports and requires a transponder and radio clearance for entry. Class C airspace surrounds medium airports and requires a transponder and radio contact for entry. Class D airspace surrounds small airports and requires only a radio for entry. Class E exists at various altitudes from the surface to 18,000 feet MSL and requires no special equipment. Class G is uncontrolled airspace that exists from the surface to 14,500 feet MSL. Special use airspace includes restricted areas,
National airspace system (NAS)
- 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
- 9. Class “B” Airspace • Mode “C” Veil • Extends 30 NM from the NAV aid on the field
- 11. Class “B” Airspace • So what if you want to navigate through & stay outa trouble????
- 13. Class “C” Airspace • How it looks on a chart. • Magenta solid rings
- 14. Class “C” Airspace • Dimensions, 2 main parts – Inner Circle, SFC to 4000 AGL – Outer Ring, 1200 AGL to 4000 AGL
- 15. Class “C” Airspace • Entry requirements. – 2 Way Radio – Mode C Transponder in and above – Tail number acknowledgment
- 16. Class “C” Airspace VFR Weather Minimums • 3 Statute miles visibility & 1,5,2
- 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
- 18. What about this one?? • N9185S, Stand by.
- 19. Class “D” Airspace • How it looks on the sectional? • Blue Dashed lines or circles
- 20. Class “D” Airspace • Dimensions • SFC to 2500 AGL • 5 Statute Miles radius
- 21. Class “D” Airspace Entry Requirements • Establish 2 way radio • No transponder needed!
- 22. Class “D” Airspace VFR Weather Minimums • 3 Statute miles visibility & 1,5,2
- 23. Questions • Why 5 Statute miles and not 5 Nautical miles?
- 24. Class “E” Airspace Most flown through – so all should now this one • What does it look like on a chart?
- 25. Class “E” Airspace • “E” from SFC to 18K MSL
- 26. Class “E” Airspace • From 700 AGL to 18K MSL • Shaded Magenta
- 27. Class “E” Airspace • 1200 to 18K MSL
- 29. Other Area’s of “E” • Victor Airways • Above FL600 • Above 18K MSL in the Alaskan Peninsula
- 30. Class “G” Airspace If you can not classify the airspace as A,B,C,D, or E, then It is considered class G.
- 31. Class “G” Airspace How does it look on a chart?
- 32. ?????????
- 34. Class “G” Airspace Dimensions • SFC to 14,500 • Normally goes to 700 or 1200 agl • Think GROUND
- 35. Class “G” Airspace Entry Requirements *NONE*
- 36. Class “G” Airspace VFR Weather Minimums
- 38. Special Use Airspace Restricted Area
- 39. Special Use Airspace Prohibited Area
- 40. Special Use Airspace Military Operations Area
- 41. Special use Airspace Alert & Warning Areas
- 43. Watch Out For WHO??? • 4 digits, at or below 1500 AGL • 3 digits, means above and below 1500 AGL • Speeds in excess of 250 KIAS
- 44. Other Airspace Info • www.AOPA.org • www.FAA.GOV • www.FAASafety.gov • Right here at the flight school!!