From , October 2019
Agence France-Presse
Title : US aviation authority blasted over of 737 MAX redesign approval

[The American FAA (Federal Aviation Administration) were slammed Friday for allowing design changes to Boeing's 737 MAX aircraft that have been implicated in two crashes causing the deaths of more than 300 people.
FAA failed to stick to its own rules, followed out-of-date procedures and lacked the manpower and expertise to properly oversee the alterations, a panel of worldwide experts found ...

The JATR (Joint Authorities Technical Review panel includind members of the FAA as well as NASA and other regulators from around the world) was put together in March after a 737 MAX run by Ethipoian Airlines crashed killing all 157 onboard.

That came after the same make of jet flown by Lion Air plunged into the ocean off Indonesia in October, with the loss of 189 people, in similar circumstances.

... FAA came in for harsh criticism from the JATR, which said there was "an inadequate number of FAA specialists" in place to oversee a new design of the 737 MAX and they "had inadequate awareness" of the system implicated in the crashes ...]