On May 25, Southwest Airlines Flight N8825Q, a Boeing 737 Max experienced what is known as a “Dutch roll” — where the aircraft tail wags back and forth as the wings rock in see-saw fashion, according to NBC.The Phoenix to Oakland flight had 175 passengers and six members of the crew aboard. The plane was initially reported to be at 38,000 feet at the time of the incident, but a National Transportation Safety Board investigation showed it was at 34,000 feet.