Spurred by Boeing’s recent litany of quality defects in production of the 787 Dreamliner, the 737 MAX and the 767-based KC-46 tanker, a congressional committee sent letters Tuesday to both Boeing and the Federal Aviation Administration seeking pertinent manufacturing and quality control records.

The move, yet another setback for Boeing, signals a loss of confidence from the repeated quality lapses and comes after a drastic shift in Boeing’s system of production quality control that since 2019 cut out thousands of quality inspection checks formerly performed after work was completed.

The letters from Peter DeFazio (D-Ore.), chair of the U.S. House Committee on Transportation and Infrastructure, and Rick Larsen (D-Everett), chair of the Subcommittee on Aviation, demand records “regarding continued issues with the manufacture and production of Boeing commercial aircraft at facilities in both Washington state and South Carolina.”

The same House committee’s deep investigation into the two 737 MAX crashes that killed 346 people produced a scathing report last fall that cataloged a series of “technical miscalculations and troubling management misjudgments” at Boeing and “grossly insufficient oversight by the FAA.”

The letters initiate a new investigation into production quality lapses across a range of aircraft:

“In light of these new and ongoing issues that point to problems in maintaining quality control and appropriate FAA oversight of production issues, I will thoroughly and deliberatively investigate any issues, such as those affecting the 737 MAX and the 787, that may endanger public safety,” DeFazio said in a statement Tuesday.


Last week, the FAA approved Boeing’s fix for the MAX electrical problem. And Boeing has begun delivering 787s again as it gradually completes rework on the backlog of parked planes. The latest report of debris found inside the tanker fuel tanks was last summer.

However, as Boeing struggles to emerge from the 21-month grounding of the MAX after the crashes while coping with the demand collapse and cash squeeze from the pandemic downturn, the eruption of one quality problem after another has presented a series of new hurdles.

This follows a sweeping transformation of Boeing’s quality system in 2019 that deliberately eliminated thousands of quality checks during production and cut hundreds of quality inspector jobs.

The idea was to ensure quality with tools and automation during initial installation and to allow mechanics to inspect their own work without a second set of eyes to check it.

Boeing said late Tuesday that the changes in the inspection process shifted the system “toward preventing defects before they occur” and that there has been “no overall reduction in quality staffing.”

Ernesto Gonzalez-Beltran, the vice president of quality whom Boeing brought in from the auto industry to oversee that major shift in its quality system, left the company in December.


Connie Kelliher, spokesperson for the International Association of Machinists (IAM) union, said Boeing has recently begun recalling quality inspectors again.

The U.S. House inquiry suggests Boeing may have to reassess the changes introduced on its quality checks.

“Congress has an obligation to … ensure U.S. aviation remains the global gold standard in safety,” Larsen said. “I will continue to push for rigorous oversight of the FAA and industry to improve the safety of air travel.”

Boeing said Tuesday it has received the letter and is reviewing it.