Boeing’s white-collar union alleged Tuesday that company management retaliated against engineers overseeing design work on behalf of the Federal Aviation Administration, heightening concerns about a self-regulation regime that’s come under renewed fire since Jan. 5, when a fuselage panel blew out midair.In 2022, as Boeing worked to integrate new avionics packages into its 777 and 787 widebody aircraft, two of its engineers insisted the company needed to reevaluate prior engineering work complet...