said Sunday some of its 737 Max jetliners were accidentally delivered with one of the cockpits’ warning lights as an optional addition, rather than a standard feature of the new aircraft, and that the company knew for months before informing the Federal Aviation Administration.a warning light related to two sensors meant to determine a plane’s position in the sky was turned off in most 737 Max planes.
“Neither the angle of attack indicator nor the AOA Disagree alert are necessary for the safe operation of the airplane,” Boeing said in the statement. “They provide supplemental information only, and have never been considered safety features on commercial jet transport airplanes.”