Class B airspace surrounds the busiest commercial airports in the United States -- the major hubs where airliner traffic is densest and airspace management is most complex. For drone pilots, Class B is the most restrictive of the controlled airspace classes. Getting authorization is possible, but it requires understanding what you are asking for and what LAANC can actually provide.
What Class B Airspace Is
Class B airspace is designed as a series of concentric upside-down wedding cake layers around a primary airport. The innermost layer extends from the surface up to the ceiling altitude -- typically 10,000 ft MSL. Outer layers start at progressively higher floor altitudes and extend to the same ceiling.
Every manned aircraft entering Class B needs an ATC clearance and must have a Mode C transponder. The airspace boundaries are precisely defined and published in FAA sectional charts and NASR data.
Major Class B airports include:
- Atlanta Hartsfield-Jackson (KATL)
- Chicago O'Hare (KORD) and Midway (KMDW)
- Los Angeles International (KLAX)
- Dallas/Fort Worth (KDFW) and Love Field (KDAL)
- New York JFK (KJFK), LaGuardia (KLGA), and Newark (KEWR)
- San Francisco (KSFO), Oakland (KOAK), and San Jose (KSJC)
- Miami International (KMIA) and Fort Lauderdale (KFLL)
- Denver International (KDEN)
- Seattle-Tacoma (KSEA)
- Phoenix Sky Harbor (KPHX)
The combined airspace footprints of these airports cover enormous geographic areas. In the New York area, the overlapping Class B structures of JFK, LaGuardia, and Newark cover most of the greater metropolitan area.
Part 107 Requirements in Class B
Under 14 CFR 107.41, a small UAS may not operate in Class B airspace unless that operation has received an authorization from the FAA. For drone pilots, that authorization comes through one of two channels:
LAANC (Low Altitude Authorization and Notification Capability) is the automated system that provides near-real-time airspace authorization for operations below certain altitude ceilings in designated grid cells around airports. LAANC is available at most Class B airports and processes authorization requests in seconds through approved apps.
DrAFT (Drone Authorization and Fleet Tracking) is the FAA's manual authorization system for operations that LAANC cannot accommodate -- higher altitude ceilings, non-standard operations, or areas not covered by LAANC.
There is no provision in Part 107 for flying in Class B without authorization, regardless of how far you are from the runway or what altitude you are at. If you are within the Class B boundary, you need authorization.
LAANC in Class B: The Practical Reality
LAANC in Class B airspace is subject to the UAS Facility Maps -- grids that show the maximum altitude ceiling at which LAANC authorization is available for each grid cell. These altitude ceilings are set by the FAA based on airspace complexity, traffic patterns, and operational considerations.
In Class B airspace, LAANC altitude ceilings vary dramatically:
Near the primary airport. The innermost grid cells -- typically within 1-2 miles of the runway -- often have a LAANC ceiling of 0 feet. Zero means no LAANC authorization is available at any altitude. You would need a manual DrAFT authorization, which requires coordination with the TRACON (Terminal Radar Approach Control) facility.
Outer Class B layers. As you move away from the primary airport, LAANC ceilings often increase -- 50, 100, 200, or 400 feet in various grid cells. A check at a specific location will show you the exact ceiling for that grid.
The surface extension. Many Class B airports have a surface area where the Class B floor is at 0 ft MSL -- meaning any flight at any altitude within that area is in Class B and requires authorization. The surface extension boundaries are not always obvious from a casual map look.
The only way to know the exact LAANC ceiling at a specific location is to check. A general sense of "I'm 5 miles from the airport" is not enough to determine whether LAANC authorization is available and at what altitude.
Getting LAANC Authorization in Class B
LAANC authorization is available through several FAA-approved apps and systems. The process:
- Enter your flight location and planned altitude.
- The app queries the UAS Facility Map for that grid cell.
- If your requested altitude is at or below the LAANC ceiling, authorization is issued automatically -- typically in seconds.
- You receive an authorization number. Log it.
Authorization is location-specific, altitude-specific, and time-specific. An authorization for a 100 ft AGL flight at a specific coordinate is not authorization for any other location or altitude.
If LAANC is not available at your needed altitude, your options are:
- Reduce altitude to within the LAANC ceiling (if operationally feasible)
- Apply for a DrAFT authorization (plan for days to weeks of lead time)
- Select a different flight location outside the Class B structure
Class B vs Class D: An Important Distinction
Many pilots conflate Class B and Class D airspace. The key differences:
Class B surrounds major commercial hubs. It extends to much higher altitudes, covers much larger geographic areas, and has LAANC ceilings that are often 0 near the primary airport. The airspace is complex and three-dimensional.
Class D surrounds airports with operating control towers but lower traffic volume. It typically extends from the surface to 2,500 ft AGL and has a simple cylindrical shape with a radius of approximately 4-5 nautical miles. LAANC is available at most Class D airports with ceiling altitudes up to 400 ft in many grid cells.
For commercial work, Class D is more commonly encountered and easier to work within. Class B requires more careful planning and advance authorization at the altitudes relevant to drone operations.
Practical Planning for Class B Operations
If your commercial work takes you near a major hub:
- Determine whether you are actually in Class B. Use current airspace data, not a general estimate. Class B boundaries are three-dimensional and do not follow intuitive geographic boundaries.
- Check the LAANC ceiling. If the ceiling for your grid cell is 0, plan for manual authorization or a different location.
- Apply for DrAFT early. Manual authorizations require advance coordination with the TRACON facility. For time-sensitive commercial work, apply at least two weeks in advance.
- Log your authorization number. LAANC authorization numbers are your documentation that the operation was legal. Every flight in Class B should have a documented authorization.
- Confirm TFRs. Major airports frequently have non-scheduled TFRs -- VIP movements, security events, emergency response. Check immediately before flight, not the day before.
Run your airspace check at uas-skycheck.app to see your exact LAANC availability, ceiling altitude, and active TFRs for any location.