Boeing whistleblower steps forward ahead of CEO’s testimony in Washington, senator says ABC NewsBoeing hid questionable parts from regulators that may have been installed in 737 Max planes, new whistleblower alleges CNNBoeing CEO to face senators over 737 Max safety and manufacturing issues WTVCBoeing CEO Calls Culture ‘Far From Perfect’ as New Whistleblower Surfaces The Wall Street JournalBefore Boeing CEO hearing, Senate releases new claims of 737 MAX fraud The Seattle Times