It’s most common at high altitudes. The incident occurred on May 25 at 8 a.m. Pacific time on Southwest flight 746 from Phoenix to Oakland at about 34,000 feet in the air.

April 2021: Months after the 737 MAX 8 was recertified by the Federal Aviation Administration, Boeing flagged a potential electrical issue and airlines temporarily took the plane out of service.

Federal officials said Thursday they're investigating an unusual rolling motion on a Southwest Airlines Boeing 737 Max 8 that might have been caused by a damaged backup power-control unit.

In this Wednesday, Nov. 18, 2020 file photo, a worker uses a flashlight to inspect an engine on a Boeing 737 Max 8 built for Southwest Airlines at Renton Municipal Airport in Renton, Wash.

Federal authorities and Boeing are trying to figure out why a 737 Max 8 experienced a rare, unsafe back-and-forth roll during flight. The oscillating motion is known as a Dutch roll, and one ...

Southwest Airlines has exercised options for the delivery of 30 Boeing 737 MAX 7 planes next year, and converted 24 existing MAX 7 orders to MAX 8, the company said in an SEC filing on Friday.