UAS Safety, Regulations, and Pre-Mission Planning

Why Regulations and Safety Come First

Before a UAS leaves the ground on a photogrammetric mission, the remote pilot in command (RPIC) must satisfy a web of federal rules, airspace requirements, and occupational safety standards. Skipping any step can ground a flight legally, expose a crew to physical harm, or invalidate collected data. This lesson walks through Part 107, airspace classification, the LAANC authorization process, weather minimums, and OSHA field-safety expectations — everything you need to build a compliant, safe mission plan.

FAA Part 107 at a Glance

Title 14 of the Code of Federal Regulations (CFR), Part 107 governs small unmanned aircraft systems (sUAS) weighing less than 55 pounds at takeoff. Key operational rules include:

• Remote pilot certification. The RPIC must hold a current Part 107 Remote Pilot Certificate, obtained by passing the FAA Aeronautical Knowledge Test at an approved testing center.
• Registration. Aircraft weighing 0.55 lb or more must be registered with the FAA before flight.
• Visual line of sight (VLOS). The RPIC or a visual observer must maintain unaided sight of the aircraft at all times.
• Altitude. Maximum altitude is 400 feet above ground level (AGL), or within 400 feet of a structure's immediate airspace.
• Daylight and twilight. Operations are permitted during daylight and civil twilight (30 minutes before official sunrise to 30 minutes after official sunset) provided the aircraft has appropriate anti-collision lighting.
• Right of way. sUAS must yield right of way to all manned aircraft.
• No operations over moving vehicles or people not directly participating in the operation, unless a waiver is granted.
• Waivers. The FAA may issue a Certificate of Waiver (CoW) for specific Part 107 limitations — for example, night operations before anti-collision lighting rules were updated, or flight over people. Waiver applications are submitted through FAA DroneZone.

Airspace Classification and Authorization

US national airspace is divided into classes A, B, C, D, E, and G. sUAS pilots are most frequently affected by:

| Class | Description | RPIC Action Required |

|-------|-------------|----------------------|

| B | Surrounds major airports; most restrictive | LAANC or DroneZone authorization |

| C | Surrounds mid-size airports | LAANC or DroneZone authorization |

| D | Surrounds smaller towered airports | LAANC or DroneZone authorization |

| E | Controlled airspace below 18,000 ft MSL | Authorization if surface-level designation |

| G | Uncontrolled airspace | No authorization needed up to 400 ft AGL |

Reading sectional charts is a core skill. Controlled airspace boundaries are printed with blue and magenta shading; airport traffic areas show dashed blue circles (Class D). Identifying these boundaries on a paper or digital chart before flight tells you immediately whether authorization is required.

The LAANC Process

LAANC (Low Altitude Authorization and Notification Capability) is an automated system that provides near-real-time airspace authorization in many controlled areas. A pilot submits a request through an FAA-approved UAS Service Supplier (USS) app; if the requested altitude falls within a pre-approved grid, authorization is returned within seconds. Always confirm LAANC availability for your specific location — not every controlled-airspace facility participates, in which case a manual DroneZone application is needed, which may take days or weeks.

Weather Minimums and NOTAMs

Part 107 requires a minimum of 3 statute miles of flight visibility from the control station and cloud clearances of 500 feet below and 2,000 feet horizontally from clouds. Wind speed is not explicitly codified in Part 107, but the RPIC must not fly in conditions that exceed the aircraft manufacturer's specifications.

Before every mission, check:

1. METAR/TAF at nearby airports for current and forecast conditions.

2. NOTAMs (Notices to Air Missions) for temporary flight restrictions (TFRs), airspace changes, or airport construction. NOTAMs are available through the FAA NOTAM Search tool. A missed TFR is a federal violation.

OSHA and Field Safety

The FAA governs airspace; OSHA governs the workers on the ground. Relevant hazard controls for UAS field crews include:

• Hazard identification before launch. Use a Job Hazard Analysis (JHA) to list each task, associated hazard, and mitigation control before arriving on site.
• Power lines. Maintain safe distances; treat all overhead lines as energized. Never fly beneath or through transmission lines.
• People and traffic. Establish a safety buffer using cones or caution tape; assign a visual observer to watch for bystanders.
• Wildlife. Birds of prey may attack sUAS. Abort and land if a bird approaches aggressively.
• PPE. Wear high-visibility vests near roadways, safety glasses near rotating propellers during ground checks, and hearing protection if required by site noise levels.
• Emergency procedures. Identify a safe landing zone and a lost-link return-to-home altitude before launch. Brief all crew on abort signals.

Building a Mission-Planning Checklist

A thorough pre-mission checklist removes ambiguity and creates a paper trail. At minimum, document:

1. Site coordinates and property permissions

2. Airspace class and authorization (LAANC confirmation code or waiver number)

3. NOTAM review date/time and findings

4. Weather check date/time and values vs. minimums

5. Identified hazards and JHA mitigations

6. Emergency landing zone coordinates

7. Crew roles and briefing confirmation

8. Aircraft registration number and battery charge status

When every field is complete and accurate, you have evidence of due diligence and a safe starting point for data collection.