Initially, the duo's mission was supposed to last a maximum of a week, but months later, the two are still on the ISS.

According to NASA, five of the spacecraft's 28 capsule thrusters failed during docking with the ISS. Subsequently, the equipment was restarted and only one did not work again. The American space agency's suspicions are that the heat of the procedure caused the shutdown. Furthermore, according to Boeing, a helium leak was identified in the spacecraft.