An electrical problem that led to dozens of Boeing 737 MAX jets being suspended from service has widened after engineers found similar grounding flaws elsewhere in the cockpit, industry sources said on Friday.
Airlines pulled dozens of MAX jets from service a week ago after Boeing Co warned of a production-related electrical grounding problem in a backup power control unit situated in the cockpit on some recently built airplanes.
Since then, suspected grounding problems have been found in two other places on the flight deck, the sources said.
These include the storage rack where the affected control unit is kept and the instrument panel facing the pilots.
