A former flight attendant on Oprah Winfrey’s private jet is suing the talk show host, saying she was fired after being falsely accused of having sex on the job during a June flight. Corrine Gehrls’ $75,000 federal lawsuit claims that flight attendant Myron Gooch and Winfrey’s goddaughter, Kirby Bumpus, made the defamatory claims that led to her termination. She and pilot Terry Pansing were let go even after passing polygraph tests about the incident. “No such conduct occurred, as was explained to Winfrey, who either conducted no investigation into the facially untenable charge or if one was conducted, it was of the most perfunctory nature,” the suit says. It later continues: “Nor could such conduct have been competently reported during the actual flight, because Bumpus, Winfrey, and the other passengers of the June 14 crew (with the exception of the security officer) slept through the flight following their ingestion of sleeping pills.”

A rep for Oprah’s production company, Harpo Productions, told EW on Monday morning that they have not yet been served with Gehrls’ lawsuit.