U.S. accident investigators disagree with Ethiopian authorities over the cause of a sensor malfunction that preceded the March 2019 crash of a Boeing 737 Max shortly after takeoff from Addis Ababa.
The National Transportation Safety Board said Tuesday that it determined that the bad sensor reading was caused by impact with an object, most likely a bird.
Ethiopia’s aviation authority said false readings by the sensor, which measures the direction of the plane’s nose, were caused by electrical issues that had existed since the plane was manufactured.
The NTSB said in a document dated Jan. 13 and released Tuesday that Ethiopia’s final report on the crash provides no details to support the finding of an electrical problem. The U.S. board relied partly on a fault analysis by Collins Aerospace, which made the sensor….