What were the two main technical hurdles causing the extended Starliner delay?

Answer

RCS thruster malfunctions and helium leaks in the propulsion system

The primary delay stemmed from several Reaction Control System (RCS) thrusters malfunctioning during initial maneuvers, compounded by the discovery of helium leaks within the propulsion system responsible for pressurizing propellant tanks.

What were the two main technical hurdles causing the extended Starliner delay?

#Videos

Concerning the Stranded Astronauts - YouTube

SpaceNASAastronautsmissionspace missionStarlinerBoeingdelay