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(Refer to FAA-CT-8080-2H, Figure 23, area 3.) What is the floor of the Savannah Class C airspace at the shelf area (outer circle)?

FAA Figure 23Sectional chart excerpt (Savannah, GA)FAA-CT-8080-2H · Sport, Recreational, Private & Remote Pilot supplement
How to read it: At the test center this page is printed; here you can zoom in. Find the numbered circle the question names, then read the airspace rings, airport data block and obstruction heights around it.
A

1,300 feet AGL.

B

1,300 feet MSL.✓ Correct Answer

C

1,700 feet MSL.

Explanation

In Figure 23 the outer (shelf) ring of the Savannah Class C is labeled 41 over 13: ceiling 4,100 feet and floor 1,300 feet. Class C altitudes on sectional charts are shown in hundreds of feet MSL, so the shelf floor is 1,300 feet MSL (the inner core is labeled 41 over SFC). It is not 1,300 feet AGL, and 1,700 feet MSL is not shown as a floor.

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