A month-long investigation by the US Federal Aviation Administration (FAA) has found systemic shortcomings in aircraft maker Boeing’s quality assurance. In the commercial aircraft division, the FAA commission found no standardized and clear way for employees to report quality deficiencies. Employees did not understand how to use the various reporting systems – and which system to use when, said the report, which was published on Monday. Overall, there is confusion among employees about their role in safety management, the report found. “The procedures and training are complex and in a constant…