Maine Republican Party officials said Friday they will file a complaint with the U.S. Federal Election Commission alleging U.S. Rep. Chellie Pingree violated election law when she flew on her fiance’s private jet to a New York City fundraiser.

Federal election law bans travel on noncommercial aircraft for congressional candidates unless it is done on a plane owned by a family member.

The law does not recognize a fiance as a family member.

Pingree spokesman Willy Ritch told The Portland Press Herald this week that none of the many flights Pingree took on Donald Sussman’s jet were for campaign purposes.

GOP spokesman Lance Dutson said the complaint with the FEC will center on a Sept. 13 trip Pingree, D-1st District, took from Portland to White Plains, N.Y., prior to an evening fundraiser in Manhattan. The plane left later that night for Washington, D.C.

“Chellie traveled with her partner Donald to New York on a day he had business there,” Ritch said in a statement issued Tuesday. “So he was traveling for business reasons and Chellie went along with him. Chellie also visited her son and drove to a campaign event in New York later in the day. The flight to New York was personal and no campaign or taxpayer funds were used to pay for it.”

The Maine GOP says its complaint will ask the FEC to levy a fine equal to the standard charter rate of the jet as well as a punitive fine.