Moonrise over Atlantis following the STS-76 dawn landing at NASA's Dryden Flight Research Center, Edwards, California, on 31 March 1996. NASA 905, one of two modified Boeing 747 Shuttle Carrier Aircraft (SCA), was readied to ferry Atlantis back to the Kennedy Space Center, Florida. Delivery of Atlantis to Florida was delayed until 11 April 1996, due to an engine warning light that appeared shortly after take off on 6 April. The SCA #905 returned to Edwards with Atlantis attached only minutes after departure. The right inboard engine #3 was exchanged and the 747 with Atlantis atop was able to depart for Davis-Monthan Air Force Base for a refueling stop.