The next shuttle mission, STS-51-L, was undertaken by "Challenger". It was launched on January 28, 1986, ten days after STS-61-C had landed, and ended in disaster 73 seconds after launch. Prior to the accident, "Columbia" had been slated to be ferried to Vandenberg Air Force Base to conduct fueling tests and to perform a flight readiness firing at SLC-6 to validate the west coast launch site. In the aftermath, NASA's shuttle timetable was disrupted, and the Vandenberg tests, which would have cost $60 million, were canceled. "Columbia" was not flown again until 1989 (on STS-28), after which it resumed normal service as part of the shuttle fleet.