On Wednesday in Washington, D.C., NTSB Chair Jennifer Homendy noted the investigation into the door plug blowout in January near Portland, Oregon, has revealed that the message to Boeing workers is “you mess up, you get moved.”

The 737 flying as Alaska Airlines Flight 1282 had been in service less than four months when it lost a door plug on January 5 shortly after takeoff from Portland International Airport (KPDX). The airline grounded its fleet of 737 Max 9s and the FAA followed suit, keeping the airplanes on the ground out of an abundance of caution.

• READ MORE: NTSB Grills Boeing Over Max 9 Door Plug Loss

Within two weeks, the NTSB determined the door plug had been reinstalled without four retaining bolts. Two crews who flew the aircraft prior to the blowout reported issues with the pressurization system. The aircraft was slated to go into maintenance.

On the first day of testimony on Tuesday, Boeing officials stated that during the build process the door plug was removed from the fuselage at the Renton, Washington, factory in order to replace substandard rivets. The required paperwork authorizing and tracking the removal and subsequent reinstallation has still not been found.

Homendy stressed that no evidence has been discovered to suggest the improper installation of the door plug was anything more than a mistake. Boeing has stated there is a no-retaliation policy, and it should not implement disciplinary action for unintentional mistakes.

However, Homendy questioned that assertion, citing a decision by Boeing to move two members of the door installation crew from the plant at Renton to the factory in Everett, Washington, describing it as “a form of retaliation.” There were references to Boeing employees calling the Everett facility a “cage,” “jail,” or “prison” for workers who speak up about safety issues or report mistakes.

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During the proceedings there were several mentions of how lucky the people aboard Alaska Airlines Flight 1282 had been, as there were injuries but no loss of life. Several officials noted that had the aircraft been much higher, the damage and outcome likely would have been much different.

A representative from the flight attendants union described his emotions when he learned of the blowout on the jet that had only been in service since October, realizing he had been assigned to the aircraft on a previous trip.

Much of the testimony over the past two days carried the theme of an “accident waiting to happen” because of a lack of oversight, rush jobs, and hastily trained and overworked technicians. Those who testified spoke of a factory culture where employee training is rushed or sometimes incomplete. In addition, employee turnover is frequent, resulting in employees with limited experience who don’t recognize a mistake or hazard on the floor during the build process.

Boeing officials touted the “speak up” process that encourages employees to call attention to airplane safety issues by reporting them to a manager or anonymously. However, many employees when questioned stated that they were not familiar with the “speak up” process, or they feared retaliation, saying “nothing within the Boeing system is confidential.”

• READ MORE: Boeing to Plead Guilty in DOJ 737 Max Crash Cases

It was noted that Boeing has faced accusations of retaliation against whistleblowers in the past, most notably in 2018 and 2019 after the two 737 Max crashes that killed 346 people. Both crashes were attributed to the MCAS, an automated system that put the aircraft into unrecoverable dives shortly after takeoff. The subsequent investigation revealed the pilots had not been told of or trained on the use of the system.

FAA representatives stated that the agency hotline has received an increase in reports of safety concerns from Boeing employees and those from Spirit AeroSystems, a Boeing contractor that builds the components of the 737 fuselage, such as the door plugs, since the accident.

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