Part 107 Airspace Calculator

This calculator gives a quick first read on Part 107 airspace restrictions for a planned small-drone flight, based on the airspace classification at your location. Under 14 CFR § 107.51(b), Class G (uncontrolled) airspace lets you fly up to 400 feet above ground level without additional authorization -- the FAA's baseline altitude ceiling for routine small-UAS operations. Classes B, C, D, and the surface area of Class E, by contrast, are controlled airspace: operating there requires authorization, which most operators now obtain instantly through LAANC (the Low Altitude Authorization and Notification Capability), an automated system that grants approval up to a location-specific grid ceiling published on the FAA's UAS facility maps rather than a flat 400-foot limit everywhere.

Max Allowed Altitude reflects that grid ceiling when you're in controlled airspace, capped at 400 feet even where a location's actual LAANC grid allows more, since 400 feet AGL is also Part 107's structural ceiling outside the narrow within-400-feet-of-a-structure exception. FAA Registration Required and Remote ID Required both key off aircraft weight: under 14 CFR § 48.15, any drone over 0.55 lb (about 250 grams) takeoff weight loses the Part 48 registration exemption and must be registered with the FAA, and under 14 CFR Part 89, Remote ID applies to any aircraft that is registered or required to be registered -- so the same 0.55 lb / 250g line determines both, with narrow exceptions such as flights within an FAA-Recognized Identification Area. Because LAANC grid ceilings are specific to the exact location and airspace rules are periodically updated, treat every result here as a planning starting point, not a substitute for checking the actual FAA UAS facility map and your operator credentials before flying.