Why Your Drone Can’t Legally Fly on 5G (And How 200 Aircraft Just Cracked the Wall)

The Brief

On 11 September 2026 the Federal Communications Commission released Order DA 26-972, granting a conditional, temporary waiver of airborne mobile restrictions to support the U.S. Department of Transportation’s Mobile Network Aviation Assessment Program (MNAAP). The waiver, effective through 1 October 2029, creates a controlled nationwide sandbox across 14 commercial spectrum bands for up to 200 unmanned aircraft systems and 2,000 general aviation pilots. Its purpose is to evaluate whether commercial wireless networks can support aviation safety services, including command and control (C2), detect-and-avoid (DAA), and Remote ID. It is a research evaluation program for government and telecom engineers, not authorization for commercial drone pilots to fly over cellular networks.

If you have ever evaluated cellular command-and-control to solve the range limits of traditional drone controllers, you ran directly into an unspoken friction in commercial aviation: the cellular technology to fly an aircraft from 50 miles away already blankets the country, yet routine airborne cellular transmissions remain virtually illegal under federal law.

Every commercial flight lead knows the operational headache. Controllers operating on crowded 2.4 GHz and 5.8 GHz ISM bands drop telemetry or video the moment an airframe ducks behind trees, utility structures, or terrain. Cellular networks look like the obvious operational alternative until you encounter 47 CFR § 22.925 and related commercial spectrum rules.

Those rules were not written for drones; they were created to protect ground-based cellular networks from high-altitude interference.

Terrestrial cell networks rely on frequency reuse and antenna downtilt. Base station antennas are physically angled downward toward the ground so signals cover tight geographic sectors and fade before reaching adjacent towers using the exact same frequencies. On the ground, terrain and buildings shield distant cell sites, allowing mobile devices to connect cleanly to one or two towers at a time.

At 400 feet AGL, that natural shielding disappears. Even with antennas pointed down, an airborne modem has unobstructed line-of-sight to dozens of base stations simultaneously. Instead of a discrete, localized connection, an airborne transmitter acts like an RF floodlight—spraying energy across multiple cell sectors, triggering chaotic handoff requests at flight speeds, and degrading capacity for ground subscribers below.

Consumer digital modems made legal compliance even tougher. Modern 5G chipsets continuously and automatically hunt for available frequencies. If a drone carrying a cellular modem drifts through a coverage gap, the modem can silently hop across AWS, PCS, or C-band frequencies where airborne transmission is strictly barred by federal regulation. For enterprise teams, testing cellular BVLOS previously meant risking an FCC violation simply because a modem searched for a tower.

Order DA 26-972 carves a narrow, technical exemption exclusively for the DOT’s MNAAP initiative. The FCC conditionally suspended aeronautical mobile prohibitions across low-band (600 MHz, 700 MHz, FirstNet Band 14), mid-band (800 MHz, AWS, PCS, WCS, BRS), C-band/high-capacity (3.45 GHz, CBRS, 3.7 GHz), and millimeter-wave allocations (24 GHz, 28 GHz, 37 GHz, 47 GHz).

Under this umbrella, DOT is running a two-tier evaluation framework: up to 2,000 general aviation pilots running a passive smartphone application to map signal strength and dead zones, and up to 200 UAS fitted with purpose-built MNAAP hardware modules to stress-test active C2 and detect-and-avoid handshakes aloft. All operations remain strictly non-interfering and unprotected, data transmissions are capped at once every two seconds, and DOT retains a remote kill switch.

This is the data foundation federal regulators need to draft the communications requirements for Part 108. It is the proof-of-concept that will determine whether cellular towers can steer commercial drone fleets without breaking cellular service on the ground.

Sources

• • Federal Communications Commission: Order granting conditional waiver for DOT Mobile Network Aviation Assessment Program, DA 26-972 (released 11 September 2026) — https://docs.fcc.gov/public/attachments/DA-26-972A1.pdf
• • 47 CFR § 22.925: Prohibition on airborne operation of cellular telephones — https://www.ecfr.gov/current/title-47/chapter-I/subchapter-B/part-22/subpart-H/section-22.925
• • 47 CFR Part 27: Miscellaneous Wireless Communications Services — https://www.ecfr.gov/current/title-47/chapter-I/subchapter-B/part-27
• • U.S. Department of Transportation: Mobile Network Aviation Assessment Program (MNAAP) Overview — https://www.transportation.gov/

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