Drone flight areas and altitude limits.

Airspace / Restricted Zone	Status	Max Altitude (AGL)	Authorization Required	Key FAA Rules & Border Limitations
Class G Airspace Uncontrolled Airspace	Allowed	400 ft (120 m)	None (Part 107 / TRUST)	Standard recreational & commercial flight. Must keep visual line of sight (VLOS) and yield right-of-way to manned aircraft.
Class B Airspace Major Airport Hubs	LAANC Required	0 – 400 ft (Grid Ceiling)	FAA LAANC / DroneZone	Controlled high-density airspace. Maximum legal altitude is defined by the FAA UAS Facility Map grid (0–200 ft closer to runways).
Class C & D Airspace Regional Airports with Towers	LAANC Required	0 – 400 ft (Grid Ceiling)	FAA LAANC / DroneZone	Instant automated approval via LAANC service suppliers (Aloft, AutoPylot, Airspace Link). Prohibited without active authorization.
Class E Surface Extension Controlled Airspace to Ground	LAANC Required	0 – 400 ft (Grid Ceiling)	FAA LAANC	Controlled airspace reaching ground level near non-towered instrument approach airports.
Prohibited Areas (P-00) e.g., P-56 Washington D.C., Camp David	Prohibited	0 ft (No Flight)	Not Granted (Secret Service/DOD)	Strict nationwide prohibition. Drones operating here are subject to immediate counter-UAS action, seizure, and criminal charges.
Restricted Areas (R-00) Military Ranges / Hazardous Facilities	Restricted	0 ft (Unless Active/Permitted)	Controlling Agency Permit	Operations are prohibited while the area is active unless prior written approval is issued by the controlling military/federal authority.
U.S. Borders & Critical Infrastructure US-Mexico / US-Canada Borders	Security Zone	0 – 400 ft (Strict Limits)	FAA 99.7 / DHS Clearance	Flight within international border security buffers and designated Department of Defense/DHS facilities is regulated under 10 U.S.C. 130i. Flight over ports of entry is prohibited.
National Parks & Wildlife Refuges NPS / USFWS Lands	Landing Ban	0 ft (Takeoff & Landing)	NPS Superintendent Permit	36 CFR 1.5 prohibits launching, landing, or operating drones from National Park property without a written permit.
Temporary Flight Restrictions (TFRs) VIP Travel, Stadiums, Wildfires	Active Ban	0 ft (Within TFR Radius)	FAA Emergency Waiver	Dynamic real-time restrictions. Prohibited over major sporting events (3 NM radius / 3,000 ft AGL 1 hr before/after event), wildfires, and presidential movements. Check B4UFLY prior to launch.