Enlarge / A Boeing 737 MAX jet lands following a Federal Aviation Administration (FAA) test flight at Boeing Field in Seattle, Washington on June 29, 2020. A congressional report found a "disturbing pattern of technical miscalculations and troubling management misjudgments made by Boeing"with regard to the 737 Max. (credit: Jason Redmond | Getty Images)

Boeing hid design flaws in its 737 Max jet from both pilots and regulators as it raced to have the airplane certified as fit to fly, according to a damning congressional report into why two of the aircraft crashed within months of each other last year, killing 346 people.

The report by the US House of Representatives transport committee found the US aircraft maker cut corners and pressured regulators to overlook aspects of its new design in its attempts to catch up with European rival Airbus. It also accused US regulators of being too concerned with pleasing the company to exercise proper oversight.

The report said: “[The two crashes] were the horrific culmination of a series of faulty technical assumptions by Boeing’s engineers, a lack of transparency on the part of Boeing’s management, and grossly insufficient oversight by the [Federal Aviation Administration]—the pernicious result of regulatory capture on the part of the FAA with respect to its responsibilities to perform robust oversight of Boeing and to ensure the safety of the flying public.

Enlarge / Doug Loverro, formerly NASA's chief of human spaceflight. (credit: NASA)

The US Attorney's Office for the District of Columbia has opened a criminal investigation of a former top NASA official, the Wall Street Journal reported Friday .

The grand jury investigation concerns communications between Doug Loverro, then the chief of human spaceflight for NASA, and Jim Chilton, senior vice president of Boeing's space and launch division. These discussions occurred early this year, during a blackout period when NASA was taking bids to construct a Human Landing System for the Artemis Moon Program. It is not permissible to interfere with a competition for government contracts.

"Mr. Loverro, who wasn’t part of NASA’s official contracting staff, informed Mr.Chilton that the Chicago aerospace giant was about to be eliminated from the competition based on cost and technical evaluations," the report states, citing unidentified sources. "Within days, Boeing submitted a revised proposal."