Explainer: Ethiopia crash raises questions over handling of faults on Boeing 737 MAX

FILE PHOTO: An aerial photo shows Boeing 737 MAX airplanes parked on the tarmac at the Boeing Factory in Renton, Washington, U.S. March 21, 2019. REUTERS/Lindsey Wasson/File Photo

SINGAPORE (Reuters) - Ethiopia's insistence that its pilots followed procedures when their Boeing Co 737 MAX nosedived before a deadly crash, and Boeing's recent declaration that a new software fix makes a "safe plane safer," have set the stage for a lengthy fight over the roles of technology and crew in recent 737 MAX crashes.

After a deadly Lion Air crash in October, Boeing and the U.S. Federal Aviation Administration told airlines what to do in the event that an erroneous sensor reading fooled the jet into thinking it was in a stall and pushed the nose down.