The Federal Aviation Administration (FAA) proposed a $5.4 million civil penalty against Boeing for allegedly installing nonconforming slat tracks on the wings of approximately 178 Boeing 737 Max aircraft. The FAA alleged that Boeing failed to adequately oversee its suppliers to ensure they complied with the company’s quality assurance system, which resulted in the installation of slat tracks that were weakened by a condition known as hydrogen embrittlement that occurred during cadmium-titanium plating. The FAA further alleged that Boeing knowingly submitted aircraft for final FAA airworthiness certification after determining that the parts could not be used due to a failed strength test.