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Kathy Hilton, Richard Hilton and Conrad Hilton attend court for Conrad Hilton's sentencing after causing a disturbance aboard an international flight from London to Los Angeles in Jul 2014 at Roybal Federal Building, June 16, 2015 in Los Angeles. Getty Images

Conrad Hilton, heir to the hotel empire that shares his name, was ordered Tuesday to go into a substance abuse treatment program for violating probation and failing drug tests stemming from an incident on a British Airways flight in July 2014 where he threatened flight attendants and disrupted the crew, the City News Service reported. The order means he will have to spend at least 90 days in the program, but will avoid the 60 days jail time that authorities requested.

Hilton, the great-grandson of Hilton Hotel founder Conrad Hilton and younger brother of socialite Paris Hilton, was sentenced after the British Airways incident to probation and community service. Authorities have said Hilton violated the terms of his probation multiple times by failing drug tests, once admitting to smoking marijuana, forcing him into outpatient substance abuse treatment.

While on probation he was also arrested for trying to break into his ex-girlfriend’s home when she broke up with him and took a restraining order out against him, the Daily Mail reported. The girlfriend, Hunter Salomon, said Hilton became obsessed with her and threatened he would kill himself.

The British Airways incident began when Hilton reportedly refused to turn off his cell phone on a flight from London to Los Angeles. Hilton began screaming at flight attendants and acting erratically, cursing and calling the flight’s other passengers “peasants,” the New York Daily News reported.

“I could get you all fired in 5 minutes,” Hilton said to the crew according to the Daily News. “I know your boss.”

He also was accused of threatening to kill flight attendants. He was eventually restrained in his seat by the flight crew after he passed out.

Threatening the flight attendants and interfering with the flight crew were felony charges, but after a plea deal, the charges were dropped to misdemeanor assault. The felony charge could have meant Hilton would be in jail for up to 20 years.