The out-of-control airline pilot how tried to down and Alaskan Airlines Flight midair told cops he had taken magic mushrooms for the first time, it emerged Tuesday.

Joseph Emerson, 44, an off-duty commercial airline pilot, went off the rails while sitting in the cockpit jump seat of a flight between Everett, Washington, and San Francisco on Sunday — trying to cut the fuel to the engines before he had to be held down by crew members.

Even while restrained, Emerson tried to open the emergency doors on the Alaskan Airlines flight as the pilots frantically giuded the craft to the ground.

When later interviewed by police he said he had a “nervous breakdown” after not sleeping for 40 hours and stated he had taken psychedelic mushrooms for the first time.

“I didn’t feel okay. It seemed like the pilots weren’t paying attention to what was going on. They didn’t… it didn’t seem right,” Emerson told police, according to the affidavit obtained by KGW8.

Although the affidavit doesn’t state whether Emerson was under the influence of the mushrooms while the omthe plane, he later added: “I pulled both emergency shut off handles because I thought I was dreaming and I just wanna wake up.”

After the plane, carrying 83 people, had made a successful emergency landing in Portland, Oregon, married father of two Emerson was taken into custody and booked at the Multnomah County Detention Center.

On Tuesday the feds charged him with one count of interfering with flight crew members and attendants.

He is due to answer further state charges in court later on Tuesday.

Although all passengers on the aircraft were safe, they were shaken up by the incident.

“The flight attendant got back on the speaker and said, plain and simple, ‘He had a mental breakdown,'” passenger Aubrey Gavello told ABC News this week. “‘We needed to get him off the plane immediately.'”

The incident also played out in dramatic air traffic control chatter.

“We’ve got the guy that tried to shut the engines down out of the cockpit and he doesn’t sound like he’s causing any issues in the back right now,” a pilot tells air-traffic control, according to audio obtained from LiveATC.net.

“We’d like law enforcement as soon as we get on the ground and park,” he said.

Emerson was riding in the cockpit jump seat as a courtesy typically extended to off-duty pilots on a flight.