Part 107 Airspace Practice: Class B, C, D, E and G

Question 1

Your site (★) is between the inner and outer solid blue rings around a major airport. The segment label reads 100 over 30. What applies to a Part 107 flight at 200 ft AGL here, assuming terrain near sea level?

Accepted Answer

Class B from 3,000 to 10,000 ft MSL above you; you're below the floor, so not Class B (check what lies underneath) — Solid blue lines are Class B. Sector altitudes are MSL with the last two zeros omitted, so '100 over 30' is a ceiling of 10,000 ft MSL and a floor of 3,000 ft MSL. At 200 ft AGL near sea level you are below that floor, so you are not in Class B. The shelf tells you nothing about the airspace beneath it: that is whatever else is charted at your site. Often it's Class G up to a Class E floor at 700 ft AGL (magenta vignette) or 1,200 ft AGL, which needs no ATC authorization. But it can also be Class C (solid magenta), Class D (dashed blue), or a Class E surface area (dashed magenta), and §107.41 requires prior ATC authorization (e.g., via LAANC or FAADroneZone) for all of those.

Answer

Class G — no authorization needed

Answer

Class B to the surface — authorization required

Answer

Class C — call the tower

Question 2

An airport is surrounded by a dashed blue circle with a dashed-box number 29 nearby. You want to fly at 150 ft AGL inside the circle. What is needed?

Accepted Answer

ATC authorization — it's Class D, surface up to 2,900 ft MSL — Dashed blue = Class D. The number in a dashed box is the Class D ceiling in hundreds of feet MSL (29 = up to and including 2,900 ft MSL; a minus sign, as in -29, would mean up to but not including 2,900). Class D starts at the surface, so any Part 107 flight inside needs prior ATC authorization under §107.41, typically via LAANC. A note such as 'See NOTAMs/Supplement for Class D eff hrs' means the Class D is part-time.

Answer

Nothing; it's Class E

Answer

Only a call to the FBO

Answer

Authorization only above 400 ft

Question 3

Your site sits on the faded (fuzzy) side of a magenta vignette band, away from any airport rings or dashed lines. What is the airspace from the surface to 400 ft AGL?

Accepted Answer

Class G — Class E starts at 700 ft AGL — A magenta vignette marks the edge of Class E airspace with a floor of 700 ft AGL. The faded side of the band faces the 700 ft area; the sharp edge is the boundary, and beyond it the Class E floor is usually 1,200 ft AGL. Below the Class E floor is Class G, so at 400 ft AGL or lower you need no ATC authorization (all other Part 107 rules still apply). A blue vignette marks a Class E floor other than 700 ft AGL (typically 1,200 ft AGL) that abuts Class G.

Answer

Class E from the surface

Answer

Class C

Answer

Restricted area

Question 4

An airport is surrounded by two solid magenta rings. The inner ring is labeled 40 over SFC. You want to fly at 200 ft AGL inside the inner ring. What applies?

Accepted Answer

Class C from the surface to 4,000 ft MSL; prior ATC authorization is required — Solid magenta lines mark Class C airspace. Each sector's MSL ceiling and floor are shown in solid magenta figures with the last two zeros eliminated, ceiling over floor, so 40 over SFC is Class C from the surface to 4,000 ft MSL. Any Part 107 flight in Class C needs prior ATC authorization under §107.41, usually through LAANC or FAADroneZone. The outer ring (40 over 15) is a shelf from 1,500 ft MSL to 4,000 ft MSL.

Answer

Class G below 700 ft AGL, so no authorization

Answer

Class B; contact approach control by radio

Answer

Class D; authorization only above 400 ft

Question 5

A non-towered airport sits inside a dashed magenta circle. You plan to fly at 100 ft AGL inside the circle. What is required?

Accepted Answer

Prior ATC authorization, because it's Class E airspace that starts at the surface — A magenta dashed line marks Class E surface (SFC) airspace, which starts at the surface around the airport. §107.41 requires prior ATC authorization for operations in Class B, C, or D airspace, or within the lateral boundaries of the surface area of Class E airspace designated for an airport.

Answer

Nothing, Class E starts at 700 ft AGL

Answer

A call on the CTAF only

Answer

Permission from the airport manager only

Part 107 Airspace Practice: Class B, C, D, E and G

Airspace Classes: what the Part 107 test expects

Airspace Classes practice questions

Drill 1: Class B shelf

Drill 2: Class D & the boxed number

Drill 3: Magenta vignette

Drill 4: Class C core

Drill 5: Class E surface area

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