In this photo taken Monday, Sept. 23, 2019, Yonas Yeshanew, who resigned as Ethiopian Airline's chief engineer this summer and is seeking asylum in the U.S., listens to a reporter's question during an interview in Seattle area. Yeshanew says in a whistleblower complaint filed with regulators that the carrier went into the maintenance records on a Boeing 737 Max jet a day after it crashed this year, a breach he contends was part of a pattern of corruption that included fabricating documents, signing off on shoddy repairs and even beating those who got out of line. (AP Photo/Elaine Thompson)

FILE - In this March 11, 2019, file photo, rescuers work at the scene of an Ethiopian Airlines flight crash outside of Addis Ababa, Ethiopia. Ethiopian Airlines’ former chief engineer Yonas Yeshanew, who is seeking asylum in the U.S., says in a whistleblower complaint filed with regulators that the carrier went into maintenance records on a Boeing 737 Max jet after it crashed this year, a breach he contends was part of a pattern of corruption that included routinely signing off on shoddy repairs. (AP Photo/Mulugeta Ayene, File)

In this photo taken Sept. 24, 2019, Yonas Yeshanew, left, who resigned as Ethiopian Airline's chief engineer this summer and is seeking asylum in the U.S., poses with his family, including wife Tigist Hailu and sons Nathan Yonas, 1, and Yoel Yonas, 5, in Seattle area. Yeshanew says in a whistleblower complaint filed with regulators that the carrier went into the maintenance records on a Boeing 737 Max jet a day after it crashed this year, a breach he contends was part of a pattern of corruption that included fabricating documents, signing off on shoddy repairs and even beating those who got out of line. (AP Photo/Elaine Thompson)

In this photo taken Sept. 24, 2019, Yonas Yeshanew, who resigned as Ethiopian Airline's chief engineer this summer and is seeking asylum in the U.S., poses with his company's identification card in the Seattle area. Yeshanew says in a whistleblower complaint filed with regulators that the carrier went into the maintenance records on a Boeing 737 Max jet a day after it crashed this year, a breach he contends was part of a pattern of corruption that included fabricating documents, signing off on shoddy repairs and even beating those who got out of line. (AP Photo/Elaine Thompson)

FILE - In this March 11, 2019, file photo, wreckage is piled at the crash scene of an Ethiopian Airlines flight crash outside Addis Ababa, Ethiopia. Ethiopian Airlines’ former chief engineer Yonas Yeshanew, who is seeking asylum in the U.S., says in a whistleblower complaint filed with regulators that the carrier went into maintenance records on a Boeing 737 Max jet after it crashed this year, a breach he contends was part of a pattern of corruption that included routinely signing off on shoddy repairs. (AP Photo/Mulugeta Ayene, File)

In this photo taken Sept. 24, 2019, Yonas Yeshanew, left, who resigned as Ethiopian Airline's chief engineer this summer and is seeking asylum in the U.S., poses with his family, including wife Tigist Hailu and sons Nathan Yonas, 1, and Yoel Yonas, 5, in the Seattle area. Yeshanew says in a whistleblower complaint filed with regulators that the carrier went into the maintenance records on a Boeing 737 Max jet a day after it crashed this year, a breach he contends was part of a pattern of corruption that included fabricating documents, signing off on shoddy repairs and even beating those who got out of line. (AP Photo/Elaine Thompson)

Ethiopian is Africa's biggest airline, one of the only turning a profit on the continent.;

Maps show Boeing 737 Max crashes in Ethiopia and Indonesia; 3c x 2 1/2 inches; 146 mm x 63 mm;

Graphic shows orders for Boeing's 737 Max jetliner; 2c x 4 1/2 inches; 96.3 mm x 114 mm;