Boeing said the problem stemmed from software delivered to the company. A Boeing spokesman declined to name the software vendor. Boeing said Sunday that because in-house experts decided that the non-working light didn't affect safety, the company decided to fix the problem by disconnecting the alert from the optional indicators at the next planned update of cockpit display software. Boeing didn't tell airlines or the FAA about this decision. Boeing hopes to win approval from the FAA and foreign regulators to get the Max 8 flying again before summer is over. When it does, the company said, the sensor warning light will be standard. Nearly 400 Max 8 jets were grounded at airlines worldwide in mid-March after the Ethiopia crash. Boeing is working to fix the software that pitched the planes' noses down based on faulty sensor readings, and to provide pilots with more information about the plane's automation.