Boeing engineer Sam Salehpour, a whistleblower who spoke out on the company's production of the 787 and 777 jets, was among four witnesses who testified Wednesday.

ABC News' Gio Benitez spoke with "Start Here" about the new allegations made by a Boeing engineer.

Boeing has paid Alaska Air Group approximately $160 million in compensation following the door plug incident on Alaska Flight 1282, according to an SEC filing.

Dave Calhoun will continue to lead Boeing through year-end, the company said.

This summer, the National Transportation Safety Board will hold a two-day investigative hearing on the Alaska Airlines door plug incident, the agency announced Tuesday.

Boeing has not fully cooperated with the National Transportation Safety Board's probe into the Alaska Airlines door plug incident, NTSB Chair Jennifer Homendy said.

Justice Department probing Boeing midair blowout

Boeing has announced it is replacing the head of its 737 Max program as part of a reshuffling of the company.

Some fuselage holes on about 50 plances "may not have been drilled exactly to our requirements," CEO Stan Deal said in an email to employees.

Boeing CEO Dave Calhoun took responsibility for a door plug getting blown out of an Alaska Airlines flight earlier this month in a fourth quarter earnings call.

Alaska Airlines resumed flying Boeing 737 Max 9 plane following fleet inspections for the first time after a door plug fell off one of its planes mid-air on Jan. 5

Upon completion of the tests, airlines can return the planes to service.

The FAA said Tuesday it will investigate after a tire under the front nose of a Delta Boeing 757 fell off one of the wheels and rolled down a nearby embankment.

Federal officials are investigating after an Atlas Air Boeing 747 cargo plane experienced an engine failure soon after departing from Miami International Airport.

The FAA announced it will take the significant step of increasing its oversight over Boeing and begin an immediate audit of Boeing's production and manufacturing.

A government investigation of the incident may expand, agency head says.

It's the end of an era at Boeing as its final 747 plane rolls off the production assembly line.

One of two "black box" recorders was found amidst the wreckage of a China Eastern Airlines flight, giving investigators hope it will shed light on why the jet crashed.

A dispute over the contract centered on retirement compensation.

The union representing Boeing workers expects the new offer to be ratified, an official said.

Boeing workers at three St.Louis-area plants rejected a contract offer on Sunday.

Boeing's former 737 MAX pilot, Mark Forkner, was indicted for fraud Thursday for allegedly misleading regulators about problems tied to the aircraft's two fatal crashes.

Boeing said it "supports the decision" of regulators to suspend operations of its 777 planes powered by Pratt & Whitney 4000-112 engines.

What you need to know about the United engine failure, grounding of some Boeing 777s

Indonesian investigators said Wednesday that a malfunctioning automatic throttle may have led to the fatal crash of a Sriwijaya Air jet last month.

Boeing plane crashes in Indonesia shortly after takeoff with 62 on board

The U.S. Justice Department charged The Boeing Company with "conspiracy to defraud the United States."

Boeing's 737 MAX flew for the first time Wednesday with members of the public onboard since two fatal crashes forced U.S. regulators to ground the plane in March 2019.

Watch the full story on "20/20"

Boeing's 737 MAX 8 aircraft was implicated in two crashes that killed 346 people

The plane had been grounded for 20 months following two fatal crashes.

The FAA chief piloted a 737 Max for almost two hours over Seattle on Wednesday.

Boeing, FAA failures are to blame for two deadly 737 MAX crashes, a house committee said.

Boeing's 737 Max inches closer to recertification

Fifteen months after the grounding of the Boeing 737 Max, one of the aircraft departed from Boeing Field in Seattle on Monday for the first round of testing with the FAA.

Lawmakers accuse FAA chief of "stonewalling" investigation into Boeing 737 Max

The "demand for commercial airline travel has fallen off a cliff."

One year after the Ethiopian Air Flight 302 crash, questions remain as to when Boeing's 737 Max will fly again

House committee faults Boeing, FAA in 737 Max investigation

Boeing CEO David Calhoun discussed the 737 Max crisis.