The Federal Aviation Administration auditors saw mechanics for a Boeing supplier using liquid Dawn soap as a lubricant for fitting a door seal, The New York Times reported.
The regulator then observed mechanics at Spirit AeroSystems, which builds the fuselage of Boeing's 737 Max, cleaning up using a wet cheesecloth, per The Times' Mark Walker.
These findings were part of a six-week audit documented in a set of FAA presentation slides upon which The Times based its report.
The slides said that Boeing had failed 33 of 89 product audits related to 737 Max production, while Spirit failed seven of 13 audits, per The Times.
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The regulator then observed mechanics at Spirit AeroSystems, which builds the fuselage of Boeing's 737 Max, cleaning up using a wet cheesecloth, per The Times' Mark Walker.
These findings were part of a six-week audit documented in a set of FAA presentation slides upon which The Times based its report.
The slides said that Boeing had failed 33 of 89 product audits related to 737 Max production, while Spirit failed seven of 13 audits, per The Times.
The FAA found staff at Boeing's supplier using liquid Dawn soap as lubricant for a 737 Max door seal: NYT
Spirit AeroSystems mechanics then used a wet cheesecloth to clean up the soap after installing the door seal, The New York Times reported.
