Off-duty pilot who tried to cut engines told police he experimented with mushrooms, complaint says

PORTLAND, Ore. (AP) — An off-duty airline pilot riding in an extra cockpit seat on a Horizon Air flight said “I’m not OK” just before trying to cut the engines midflight and later told police he had recently taken psychedelic mushrooms as his mental health worsened, according to charging documents made public Tuesday.

State prosecutors in Oregon filed 83 counts of attempted murder against Alaska Airlines pilot Joseph David Emerson, 44, on Tuesday just before he appeared in court, with his attorney, Noah Horst, entering not guilty pleas on his behalf. Federal prosecutors meanwhile charged Emerson with interfering with a flight crew, which can carry up to 20 years in prison.

According to a probable cause statement filed in Multnomah County Circuit Court, Emerson told Port of Portland police following his arrest that he had been struggling with depression, that a friend had recently died and that he had taken psychedelic mushrooms about 48 hours before he attempted to cut the engines. He also said he had not slept in more than 40 hours, according to the document.

Police reported that Emerson did not appear to be intoxicated at the time of the interview, and in a statement Tuesday, Alaska Airlines, which owns Horizon, said neither the gate agents nor flight crew noticed any signs of impairment that might have barred him from the flight. An FBI agent wrote in a probable cause affidavit in support of the federal charge that Emerson “said it was his first-time taking mushrooms.”

While psilocybin is illegal in most of the country — Oregon legalized it for adults this year — the Food and Drug Administration in 2018 designated it a “breakthrough therapy” that might be used for mental health conditions or substance use disorders.

Emerson, an Alaska Airlines pilot from Pleasant Hill, California, was arrested Sunday night after the flight crew reported that he attempted to shut down the engines on a Horizon Air flight from Everett, Washington, to San Francisco while riding in the extra seat in the cockpit. The plane was diverted to Portland, where it landed safely with more than 80 people on board.

The FBI affidavit said Emerson, who as an off-duty pilot was authorized to ride in the cockpit’s jump seat, tried to grab two red handles that would have activated the plane’s fire suppression system and cut off fuel to its engines.