OFT-2 has not gone perfectly smoothly so far, either. One of Starliner's thrusters malfunctioned during its critical orbital insertion burn 31 minutes after liftoff, NASA and Boeing officials said during a post-launch news conference on Thursday night.
That thruster's backup fired up to compensate but failed before completing the burn. A tertiary backup thruster then kicked on, and Starliner was able to get into the right orbit for an ISS rendezvous. That backup-to-a-backup thruster also performed well during a subsequent Starliner engine burn on Thursday night, NASA officials said.