Shares of inflight internet service provider Gogo are plunging after a report that American Airlines may be looking to go elsewhere for inflight Wi-Fi.
American has notified Gogo of a competitive offering from another company, according to a suit filed by the airline.
According to Andrea Ahles of the Fort Worth Star-Telegram, the filing claims that American's contract with Gogo allows the airline to terminate or renegotiate the agreement if the airline is able to find better internet service with another provider.
American is seeking a declaratory judgment from a judge to uphold that provision.
All may not be lost for Gogo, however.

"Gogo may respond with a proposal, and we will evaluate all of our options," American Airlines told Business Insider.
Gogo told Business Insider that it plans to submit a proposal to install its new 2Ku satellite technology on board the American fleet. According to Gogo, the issue pertains to only 200 of the more than 1,000 mainline and regional aircraft in the American fleet.

"American is a valued customer of ours and that we look forward to resolving the disagreement regarding contract interpretation that led to this declaratory judgment action," Gogo said.

Gogo's shares are down 35% in late morning trading.