Starlink Service Interferes with E175 Flight Deck Comms

‍DALLAS — United Airlines (UA) has temporarily disabled Starlink Wi-Fi service on about two dozen Embraer E175 regional jets after pilots reported experiencing static interference on their cockpit radios while communicating with air traffic control (ATC).

The interference was traced to the newly installed Starlink satellite internet antennas. Pilots experienced bursts of static and hiss on the VHF radios used for ATC communications after Starlink antennas were installed.

The interference specifically affected the VHF band (118–137 MHz), which is critical for voice communications between pilots and ATC. The static was not deemed an immediate safety risk, but out of caution, UA suspended Starlink service on the affected aircraft while investigating and implementing fixes.

Technical Explanation

Starlink antennas operate in the Ku and Ka microwave bands (12–30 GHz), far above the VHF band used for ATC.

However, complex electronics such as high-speed digital circuits, switching power supplies, and phased-array antennas can emit unintended electromagnetic noise and harmonics that "leak" into lower frequencies, including those used by cockpit radios.

This phenomenon is not unique to Starlink; similar issues have occurred with other new Wi-Fi systems, but the scale and speed of Starlink's rollout have brought heightened scrutiny.

Airline, Regulatory Response

United Airlines and SpaceX (Starlink's parent company) are working together to resolve the interference, describing it as "fairly common" with new Wi-Fi installations.

Technical fixes are being implemented during scheduled maintenance, with about one-third of affected aircraft already updated.

The Federal Aviation Administration (FAA) had previously certified the Starlink installation on these jets; however, further safety testing may be required if the issue persists.

United expects to restore Starlink service on the affected aircraft in the coming weeks.

Industry Implications

The incident has raised concerns about the compatibility of high-powered satellite internet systems with sensitive avionics and communications equipment.

There is ongoing industry and regulatory scrutiny to ensure that such interference does not compromise flight safety as satellite internet becomes more widespread in commercial aviation.