Sonoma, CA Drone Rules: Airport Proximity Rules (2026)

42, the City of Sonoma's 2025 drone ordinance, sets thirteen separate operating limits for unmanned aircraft systems within city limits, and subsection (E) is the aircraft-proximity rule: no person may take off or land a UAS within 1,500 horizontal feet of any aircraft. The rule is written around the aircraft itself rather than a fixed airport boundary, so it reaches a drone launched near any airplane or helicopter operating in or over the city, whether that aircraft is on the ground, taking off, landing, or simply flying nearby, and it applies regardless of whether the aircraft is at a designated airport.

The restriction sits alongside a related limit in the same section: subsection (J) separately bars flying in violation of any FAA temporary flight restriction or notice to airmen, so an operator has to clear both the city's 1,500-foot rule and any federal restriction covering the area. The chapter defines 'UAS' by reference to the small unmanned aircraft rules in 14 CFR Part 107, and it lets the city manager publish additional operating rules on the city's website consistent with the chapter. Because the 1,500-foot rule is measured from the aircraft rather than from a fixed point, an operator cannot rely on distance from a runway alone; the presence of any aircraft nearby, including a low-flying helicopter over the Sonoma Valley or a small plane on approach, triggers the restriction.