Boeing factory workers felt pressured to prioritize production speed over quality and said they did not receive enough training to properly perform their jobs, according to the results of a special investigation by the Federal Aviation Administration (FAA) published Wednesday.

An internal Boeing survey found many factory workers still felt pressure to prioritize speed over quality months after a midair blowout on one of the company’s jets sparked a crisis of confidence in the planemaker.

Boeing manufacturing workers were pressured to prioritize speed in their work over ensuring proper quality, according to a new Federal Aviation Administration report released Wednesday. The report comes as the company has been consistently under public pressure concerning its aircraft safety.