If you only study one topic for the Part 107 exam, make it airspace. Question banks and ACS alignment consistently place airspace classification among the heaviest topics — often cited in the range of roughly 15–25% of UAG items. In the field, you live with the same problem: the NAS is layered, charted, and sometimes crowded. Here is a pilot-friendly tour of all six classes and what they mean for sUAS.
Class A through G in plain English
Class A — High-altitude IFR airspace starting at 18,000 feet MSL. Not where typical sUAS work lives, but you still need to know it exists on the exam.
Class B — Busy terminal airspace around major hubs, shaped like an upside-down wedding cake. Controlled, strict rules for manned traffic; sUAS operations usually require explicit authorization and coordination.
Class C — Mid-tier airports with radar services and structured shelves. Controlled airspace — expect authorization requirements for many drone operations near the core.
Class D — Airspace around airports with an operating control tower, typically from the surface to a defined ceiling. You need to know dimensions and how charted circles relate to the airport.
Class E — Controlled airspace that is not B, C, or D. It includes surface areas at some airports and large “shelves” elsewhere. Many students miss that Class E can extend to the surface around certain airports without a tower — that chart pattern is a frequent exam target.
Class G — Uncontrolled airspace (in the sense that ATC does not provide the same separation services as in controlled classes). Fewer authorization hurdles in many places — but flight rules still apply, and you still must see-and-avoid.
Authorization vs. flying in Class G
Under Part 107, you need FAA authorization before operating in controlled airspace where the rule requires it — typically Classes B, C, D, and surface Class E where the operation would otherwise be prohibited. Class G often does not require that same authorization path for many low-altitude operations, but always verify with current charts, UAS Facility Maps, and official FAA tools. The exam tests whether you know which class you are in and which tool applies — not just “LAANC is good.”
LAANC in one breath
LAANC (Low Altitude Authorization and Notification Capability) is a system that can provide near-real-time authorization to operate in controlled airspace at approved altitudes where UAS Facility Map data supports it. You use it through approved providers or FAA workflows. It applies where LAANC is active — not everywhere. Learn the relationship between LAANC, UAS Facility Maps, and DroneZone for cases that are not automated.
Controlled vs. uncontrolled for sUAS
“Controlled” means ATC services and structured rules apply in defined ways; “uncontrolled” (often Class G) means you must still comply with Part 107, see-and-avoid, and local hazards — you just are not solving the same ATC authorization puzzle for every flight. The exam loves to test whether you confuse the two ideas.
Special Use Airspace and hazards
TFRs (temporary flight restrictions) can appear overnight for stadiums, VIP movements, wildfires, or disasters — check before every flight. MOAs and restricted areas carry special rules and often coordination requirements; your sectional legend and NOTAM briefs are mandatory reading, not optional.
Practical exam tips
Memorize authorization requirements by class cold. Know how Class E surface areas look on chart excerpts, understand when LAANC applies vs. when you need a different workflow, and practice reading sectional fragments under time pressure. If you can explain each class to another pilot without notes, you are in the right territory for the UAG.
Airspace Map Pro in VLOSready Pro shows live FAA boundaries, LAANC-related context, and location search — use it before every paid job.
Airspace is the spine of the Part 107 exam and of real commercial operations. Learn the classes once, deeply, and you will spend less time guessing on the test and less time improvising on site.