FAA Part 107 as a Regulatory Overlay (Not a Classification Replacement)

The FAA's Part 107 rule governs routine, civil (non-recreational) operations of small unmanned aircraft systems (UAS) within the United States. Rather than serving as a classification system for UAS based on attributes like size, range, or endurance, Part 107 acts as a regulatory framework layered on top of existing engineering categories. This means that while manufacturers and operators may classify drones by their physical and performance characteristics, Part 107 imposes additional operational constraints, Table 5, on how these aircraft can be used within the National Airspace System. Specifically, Part 107 applies to "small unmanned aircraft," which are defined as any unmanned aircraft weighing less than 55 pounds (25 kg) at takeoff, including all components and payloads attached to the aircraft.

Table 1 Core Operational Limitations of UAS as set by FAA. (Baseline Rule Set)

Constraint

Baseline Requirement

Implication for Operations

Weight

<55 lb MTOW

Places most commercial drones under Part 107; heavier systems follow different certification pathways.

Airspeed

≤100 mph (87 knots) groundspeed

Constrains high-speed fixed-wing operations and some long-range profiles.

Altitude

≤400 ft AGL (or within 400 ft of a structure)

Aligns with low-altitude risk mitigation and airspace separation.

Visual Line of Sight (VLOS)

Remote pilot/VO must maintain VLOS

Constrain range; motivates BVLOS waivers and detect-and-avoid solutions.

Night / Civil twilight

Allowed with required anti-collision lighting and training; waivers for exceptions

Supports extended operations but requires compliance controls.

Waivers and Authorizations: Expanding the Operating Envelope

Under FAA Part 107, operators can apply for waivers that permit unmanned aircraft systems (UAS) to conduct missions that exceed standard regulatory limits—such as flying at night, operating over people, or beyond visual line of sight (BVLOS). Additionally, operations within controlled airspace require prior authorization from the FAA. The waiver application process is designed to ensure that applicants present robust risk mitigation strategies and detailed procedural controls, demonstrating their ability to maintain the highest safety standards during expanded operations, Figure 10.

 

diagram of engineering platform capability and classifications
Figure 10 Engineering classification informs platform capability; operational context and FAA Part 107 overlay define the compliant concept of operations
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