WASHINGTON, D.C. — A House committee issued a scathing report Wednesday questioning whether Boeing and government regulators have recognized the problems that caused two deadly 737 Max jet crashes and whether either will be willing to make significant changes to fix them.

Staff members from the Transportation Committee blamed the crashes that killed 346 people on the “horrific culmination” of failed government oversight, design flaws and a lack of action at Boeing despite knowing about problems.

The committee identified many deficiencies in the FAA approval process for new jetliners. But both the agency and Boeing have said certification of the Max complied with FAA regulations.

Committee Chairman Peter DeFazio said the report highlights the need for legislation to fix the approval process and deal with the FAA’s delegation of some oversight tasks to employees.