Alaska Airlines Flight 1282, which had been bound for Ontario, California, experienced an incident soon after departure and landed safely back at Portland at 5:26 p.m. Pacific Time with 174 passengers and six crew, according to the airline and Flightradar24 data.

Social media posts showed a window and portion of a side wall missing on the airplane. Boeing and the Federal Aviation Administration did not immediately comment.

(Reporting by David Shepardson. Editing by Gerry Doyle)