National airspace system (NAS)
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National Airspace System(NAS) Review
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A review of the national airspace system within the US.
Transcript of National airspace system (NAS)
National Airspace System(NAS)Review
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
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?
Class “B” Airspace
• How does it look on a sectional?– Big & Blue, blue rings or thick lines– Some resemble an upside down wedding cake
Class “B” Airspace
• Dimensions (Typical)– Surface to 10,000’ MSL– 30 NM radius from main airport– Usually has different “floors”
Class “B” Airspace
• What do you need to enter it?– 2 way radio– Operable Mode C transponder– Clearance
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.
Class “B” Airspace
• VFR Weather Minimums– 3 statute miles visibility– Remain Clear of Clouds– No Special VFR here
Class “B” Airspace
• Mode “C” Veil• Extends 30 NM from the NAV aid on the field
Class “B” Airspace
• So what if you want to navigate through & stay outa trouble????
Class “C” Airspace
• How it looks on a chart.• Magenta solid rings
Class “C” Airspace• Dimensions, 2 main parts– Inner Circle, SFC to 4000 AGL– Outer Ring, 1200 AGL to 4000 AGL
Class “C” Airspace
• Entry requirements.– 2 Way Radio– Mode C Transponder in and above– Tail number acknowledgment
Class “C” Airspace
VFR Weather Minimums• 3 Statute miles visibility & 1,5,2
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
What about this one??
• N9185S, Stand by.
Class “D” Airspace
• How it looks on the sectional?
• Blue Dashed lines or circles
Class “D” Airspace• Dimensions• SFC to 2500 AGL• 5 Statute Miles radius
Class “D” Airspace
Entry Requirements
• Establish 2 way radio• No transponder needed!
Class “D” Airspace
VFR Weather Minimums• 3 Statute miles visibility & 1,5,2
Questions
• Why 5 Statute miles and not 5 Nautical miles?
Class “E” Airspace
Most flown through – so all should now this one
• What does it look like on a chart?
Class “E” Airspace
• “E” from SFC to 18K MSL
Class “E” Airspace
• From 700 AGL to 18K MSL
• Shaded Magenta
Class “E” Airspace
• 1200 to 18K MSL
Other Area’s of “E”
• Victor Airways• Above FL600• Above 18K MSL in the Alaskan Peninsula
Class “G” Airspace
If you can not classify the airspace as A,B,C,D, or E, then It is considered class G.
Class “G” Airspace
How does it look on a chart?
?????????
Class “G” Airspace
Dimensions
• SFC to 14,500• Normally goes to 700 or 1200 agl
• Think GROUND
Class “G” Airspace
Entry Requirements
*NONE*
Class “G” Airspace
VFR Weather Minimums
Special Use Airspace
Restricted Area
Special Use Airspace
Prohibited Area
Special Use Airspace
Military Operations Area
Special use Airspace
Alert & Warning Areas
Special Use Airspace
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
Other Airspace Info
• www.AOPA.org• www.FAA.GOV• www.FAASafety.gov• Right here at the flight school!!
