/Lawmakers Scrutinize Timeline for Boeing 737 MAX Software Fix

Lawmakers Scrutinize Timeline for Boeing 737 MAX Software Fix

WASHINGTON—Congressional investigators examining the Federal Aviation Administration’s safety certification of Boeing Co.’s 737 MAX aircraft also are questioning why it has taken months to complete a safety fix initially described to pilots and airlines in November.

With a Senate Commerce subcommittee slated to kick off Capitol Hill hearings Wednesday about Boeing’s grounded jet model, lawmakers plan to examine the timeline that regulators and the plane maker have relied on to develop and test software changes for a suspect…