MyBroadband.co.za reports that the US\u2019s Federal Aviation Administration chief Daniel Elwell earlier this week cited unspecified evidence found at the crash scene as part of the justification for the agency to reverse course and temporarily halt flights of Boeing\u2019s largest selling aircraft. Up until then, American regulators had held off as nation after nation had grounded the plane, Boeing\u2019s best-selling jet model.\n\n\n\nThe piece of evidence was a so-called jackscrew, used to set the trim that raises and lowers the plane\u2019s nose, according to the person, who requested anonymity to discuss the inquiry.\n\n\n\nA preliminary review of the device and how it was configured at the time of the crash indicated that it was set to push down the nose, according to the person, who wasn\u2019t authorized to speak publicly about the investigation.\n\n\n\nThe jackscrew, combined with a newly obtained satellite flight track of the plane, convinced the FAA that there were similarities to the Oct. 29 crash of the same Max model off the coast of Indonesia. In the earlier accident, a safety feature on the Boeing aircraft was repeatedly trying to put the plane into a dive as a result of a malfunction.\n\n\n\nAll 157 people aboard Ethiopian Airlines Flight 302 died early Sunday shortly after the plane took off. The pilot reported an unspecified problem and was trying to return to the airport. The plane crashed near Addis Ababa, Ethiopia\u2019s capital. The plane\u2019s crash-proof recorders have been sent to France to be analyzed.\n\n\n\nThe discovery of the jackscrew was earlier reported by NBC News.