Boeing Co. knew months before a deadly 737 Max crash that a cockpit alert wasn’t working the way the company had represented to buyers of the jetliner.
But the plane maker didn’t tell airlines or the Federal Aviation Administration of the problem with the warning light until after a Lion Air plane went down off the coast of Indonesia in October, according to a Boeing statement Sunday. The accident occurred after an erroneous reading by a single angle-of-attack sensor triggered software that pushed the jet’s nose down until pilots lost control.
But the alert was only working on planes that had a separate angle-of-attack indicator on the cockpit display, the manufacturer said. The additional feature cost extra.
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