Industrial Safety / Manufacturing News

Boeing discovered problem with warning light but didn't notify for a year

By Laurel Wamsley, for NPR

May 06, 2019

Boeing knew that there was a problem with one of the safety features on its 737 Max planes back in 2017 – well before the Lion Air crash in October 2018 and the Ethiopian Airlines crash in March. But it did not disclose the issue to airlines or safety regulators until after the Lion Air plane crashed off the Indonesian coast, killing all 189 aboard.

In a statement Sunday, Boeing said its engineers discovered a problem with a key safety indicator within months of Boeing delivering the first 737 Max planes to airlines. Boeing intended for the indicator to be standard on the 737 Max, in keeping with the features available on previous generations of 737s. But its engineers discovered that the sensor worked only with a separate, optional safety feature. Boeing said the faulty software was delivered by a vendor, which it didn't name.

When it learned of the issue in 2017, Boeing says it conducted a safety review and concluded that the nonworking alert did not affect airplane safety or operation.

Read the full story, "Boeing knew about 737 Max sensor problem before plane crash in Indonesia," on



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