Boeing is facing another investigation from the US Federal Aviation Agency after the aircraft maker admitted that some of its workers may have falsified records during the production of its 787 Dreamliner planes.

According to The Seattle Times report, Boeing has noted "several people" of violating company policies after failing to perform required tests on the planes and instead marking it as complete.

Following the confirmation, Boeing stated that it is "taking swift and serious corrective action" regarding the violators.

The FAA vowed to "take any necessary action" to ensure public safety once the investigations are completed.

The probe is only the latest series of investigations launched on Boeing as auditors found dozens of safety design flaws in several commercial planes.

At least two flights have already been affected by these safety issues, one under Alaska Airlines and another on Southwest Airlines, this year alone.

Also Read: Boeing Whistleblower Claims 787, 777 Dreamliner Jets Could 'Break Apart' Midflight

FBI, DOJ Seeks to File Criminal Charges Against Boeing

Regulatory probes are not the only legal challenge Boeing is hard pressed right now as several federal agencies have also opened the potential for criminal charges against the company.

Several passengers of Alaska Airlines Flight 1282, where one of the 737-MAX 9's fuselage panels blew off midflight, reported receiving messages from the Federal Bureau of Investigation stating that they could be a "victim of crime."

The Department of Justice later announced it is also starting a criminal investigation related to the same Jan. 5 flight.

The DOJ is set to release its decision on whether Boeing breached its promises to improve the safety of its aircraft on May 28.

Boeing in Hot Water After Deaths of Whistleblowers

On top of safety concerns for its aircraft, Boeing is facing backlash from many of its passengers following the deaths of two whistleblowers.

John Barnett, one of the primary leads on the firm's production issues, was found dead last March due to a supposed "self-inflicted" wound.

The 62-year-old former Boeing employee was giving his testaments against the company just a few days before his death.

Just two months after, the second whistleblower Joshua Dean suffered a "sudden" death over an unspecified illness after raising safety concerns in the manufacturing of the 737 MAX aircraft.

The company is facing 10 more whistleblowers ready to speak against the company's unsafe practices.

Boeing CEO Dave Calhoun has already announced his plans to step down as chief executive by the end of the year amid the fiasco.

Calhoun replaced Dennis Muilenburg in 2020 after the latter was fired in the aftermath of the two 737 MAX air crashes in 2018 and 2019 that killed 346 passengers.

Related Article: Another Boeing Whistleblower Dead Due to Sudden Illness