Part 107 operating rules

Part 107 places responsibility for the operation on the remote pilot in command. The RPIC must be designated before flight, ensure the aircraft is in a condition for safe operation, and assess hazards to people and property. A visual observer, payload operator, client, or autopilot can contribute information; none silently takes over the RPIC's legal role. If more than one pilot is involved, agree who is RPIC and how control and communications will work before launch.

The RPIC may allow a person to manipulate controls only when the regulatory supervision conditions are met. That includes the pilot being able to take direct control immediately and the operation remaining within the applicable rules. Automation does not make a prohibited route legal or remove the duty to monitor. A sound briefing identifies control transfer phrases, lost-link response, abort criteria, and who watches the airspace.

For a standard small UAS operation, Part 107 generally limits groundspeed to 87 knots (100 mph), altitude to 400 feet AGL, and flight to daylight, civil twilight with appropriate anti-collision lighting, or night under the night-training and lighting rules. Minimum visibility is three statute miles from the control station, and cloud clearance is at least 500 feet below and 2,000 feet horizontally. The regulation contains specific exceptions and definitions; apply the precise rule to the facts rather than remembering only a headline number.

The 400-foot rule has an important structure: the aircraft is generally kept at or below 400 feet AGL, with a provision allowing flight higher than that when the aircraft is within a 400-foot radius of a structure and no more than 400 feet above its immediate uppermost limit. That does not erase airspace ceilings or other restrictions. Speed, visibility, cloud separation, right-of-way, and people-overflight rules continue to apply even if the aircraft is low and close to a structure.

A controlled-airspace authorization answers whether the aircraft may operate in specified controlled airspace, at a defined location, altitude, and time. A Part 107 waiver addresses a specific regulatory provision the FAA has authorized the operator to vary. Neither document is a general license to ignore other rules, and neither automatically approves a different site, date, aircraft, or operating plan. Read the conditions and keep the authorization accessible to the crew.

The RPIC must still decide whether the actual conditions are safe. A mission can be technically within a limit and still be a poor choice because gusts, glare, RF interference, nearby people, or an unreliable command link leave no safe margin. Treat each rule as a floor for compliance, then add operating margins appropriate to aircraft performance, surroundings, and crew capability. If a mission changes materially, stop and reassess instead of stretching an earlier approval.