Here are some official sources for you on there also being hardware problems > The review team also is continuing its investigation of the intermittent space-t

Here are some official sources for you on there also being hardware problems > The review team also is continuing its investigation of the intermittent space-to-ground forward link issue that impeded the flight control team’s ability to command and control the spacecraft. The team has identified the technical root cause as radiofrequency interference with the communications system. While the team has recommended specific hardware improvements already in work by the company, the full assessment and resulting recommendations will continue through March. https://blogs.nasa.gov/commercialcrew/category/boeing/ https://blogs.nasa.gov/commercialcrew/category/boeing/ and > The NASA source said eight or more thrusters on the service module failed at one point and that one thruster never fired at all. > In response to a question about thruster performance, Boeing provided the following statement to Ars: "After the anomaly, many of the elements of the propulsion system were overstressed, with some thrusters exceeding the planned number of burns for a service module mission. We took a few cautionary measures to make sure the propulsion system stayed healthy for the remainder of the mission, including re-pressurizing the manifold, recovering that manifold’s thrusters. Over the course of the mission we turned off 13 thrusters and turned all but one back on after verifying their health." https://arstechnica.com/science/2020/01/nasa-and-boeing-are-closely-looking-at-starliners-thruster-performance/ https://arstechnica.com/science/2020/01/nasa-and-boeing-are-...