CNN  — 

It happened in a moment: The Boeing 737 Max-9 was gaining altitude after taking off from Portland. Then a loud boom – an explosion – then a rush of air and screams as a refrigerator-sized hole was left in the side of the 220-passenger plane.

A boy’s shirt was ripped clean off his body, flying out the hole, amid the air pressure loss after a part of the plane’s fuselage blew off. Some passengers screamed and cried, drafting text messages to their loved ones as a rush of air entered the plane and oxygen masks dropped from the ceiling.

Nick Hoch, a 33-year-old passenger on the plane on Friday, called the ordeal “traumatic,” “tense,” and “jarring,” in a phone interview with CNN.

“A mist or cloud whooshed past me that kind of hit me in the face,” he said. “People’s hair was flying all over the place.”

After the initial “boom,” he said the plane “kind of jolted.” Oxygen masks fell, everyone put them on and he said he felt disoriented.

“I was pretty startled and frightened, and I think other folks were pretty distraught as well.”

Hoch said he was sitting on the left side of the plane a couple of rows in front of where the panel blew off. “There were people much closer who I spoke with who lost AirPods out of their ears,” he said.

Soon after the portion of the plane blew off, Hoch said people were “remarkably calm,” as they sat quietly listening to the flight crew.

Hoch told CNN the flight crew and pilot did a magnificent job. He said they were calming and reassuring. “There were a few frantic passengers but mostly everybody was calm,” he said.

The flight had reached 16,000 feet after taking off from Portland, Oregon, bound for Ontario, California, about 5:07 p.m., according to FlightAware.

Shortly after takeoff, a panel, including a window, popped off, passenger Kyle Rinker told CNN. “It was really abrupt. Just got to altitude, and the window/wall just popped off.”

“We’d like to get down,” the pilot told air traffic control, according to a recording posted on liveatc.net. “We are declaring an emergency. We do need to come down to 10,000.”

The plane, with 171 passengers and six crew members on board, landed safely about 20 minutes later at the airport. One person was taken to a hospital. The airline said in a Saturday statement several guests on Flight 1282 were injured and required medical attention but have all since been medically cleared.

Alaska Airlines temporarily grounded the rest of its Boeing 737-9 Max fleet and said it was inspecting the plug doors on all its jets. The “plug door” refers to a portion of the plane’s fuselage the manufacturer can put in place instead of an emergency exit door, depending on the configuration requested by an airline.

The Federal Aviation Administration on Saturday said it was grounding many aircraft of the model for inspections, affecting 171 jets used by airlines.

Alaska Airlines said it inspected 18 of the Boeing 737 Max 9 in its fleet Saturday and returned those to service, but hours later, reversed course and said those aircraft would be removed “until details about possible additional maintenance work are confirmed with the FAA.”

Alaska Airlines flight makes emergency landing in Oregon after window appears to have blown out after takeoff.

Passenger Emma Vu said passengers comforted each other during the ordeal.

“The flight attendant came over, too, and told me it was going to be OK,” Vu told CNN. “The fact that everyone was kind of freaking out and she took that time to kind of make me feel like I was the only passenger – honestly that was really sweet.”

Passengers applauded as the plane landed, King’s video shows.

Some passengers stood up. Flight attendants reminded them to remain seated.

One man can be heard saying, “There’s a f**kin’ hole inside the plane. What the f**k is that?”

This is a developing story and will be updated.

CNN’s Pete Muntean, Jillian Sykes, Andy Rose, and Sharif Paget contributed to this report.