FAA, NTSB probe unusual rolling of Southwest Airlines Boeing 737 Max

WASHINGTON, D.C.: Federal officials announced June 13 that they are investigating an unusual rolling motion experienced by a Southwest Airlines Boeing 737 Max, potentially linked to a damaged backup power-control unit.

The Federal Aviation Administration (FAA) is collaborating with Boeing and the National Transportation Safety Board to examine the incident on May 25 during a flight from Phoenix to Oakland, Calif