IS-33e was the second satellite to be launched as part of Boeing's "next generation" EpicNG platform. The first, dubbed IS-29e, failed due to a propulsion system fuel leak. Intelsat declared the satellite a total loss in April 2019, later attributing it to either a micrometeoroid strike or solar weather activity.
What caused IS-33e to break up in orbit remains unclear, however. Intesalt officials did observe that it was using far more fuel than it should be to maintain its orbit shortly after launching eight years ago, shaving off 3.5 years of its 15-year lifetime.
Boeing produces more leaks than this guy:
