Boeing 737 MAX

Former Boeing official subpoenaed in 737 MAX probe won’t turn over documents, citing Fifth Amendment protection

The final assembly area for the 737 MAX airplanes outside the Boeing factory in Renton in May. (Mike Siegel / The Seattle Times)

Mark Forkner, Boeing's former chief technical pilot on the MAX project, invoked the privilege in response to a grand jury subpoena issued by U.S. Justice Department prosecutors looking into the design and certification of the plane.

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