"On 6 September 2003 at 15:28 UTC, the satellite was badly damaged while being worked on at the Lockheed Martin Space Systems factory in Sunnyvale, California. The spacecraft fell to the floor as it reached 13° of tilt while being rotated. The satellite fell as a team was turning it from a vertical to a horizontal position. A NASA inquiry into the mishap determined that it was caused by a lack of procedural discipline throughout the facility.
Repairs to the satellite cost US$135 million"
Wikipedia Article