ULA announces the delay of Cygnus and the measures taken to ensure the launch will be safe and productive.
(Cape Canaveral Air Force Station, Florida, March 22, 2017, 4:30 p.m. EDT) - The launch of the ULA Atlas V rocket carrying the OA-7 Cygnus spacecraft for Orbital ATK and NASA has been postponed and is scheduled to launch no earlier than March 27. While completing testing for a ground support hydraulic condition discovered during prelaunch testing, a different issue with a booster hydraulic line was observed. The team is developing a plan to resolve the issue and a new launch date will be determined. The Atlas V and Cygnus spacecraft remain secure in their processing facilities.
A United Launch Alliance Atlas V 401 will launch Orbital ATK’s Cygnus™ spacecraft on the initial leg of its cargo resupply mission to the International Space Station (ISS).
Orbital ATK developed the Cygnus advanced maneuvering spacecraft to perform ISS cargo delivery missions under the Commercial Resupply Service (CRS) contract with NASA. At a total weight of approximately 7,225 kg (15,928 lb), OA-7 will include approximately 3,380 kg (7,452 lb) of internal cargo and an 83 kg (183 lb) external deployer carrying CubeSats.
This mission marks the third time ULA’s Atlas V has launched Orbital ATK’s Cygnus™ spacecraft on its way to the ISS. OA-7 will be the 71st launch of the Atlas V rocket since its first launch in 2002. The Atlas V 401 configuration rocket has flown 35 times, supporting a diverse set of missions, including national security, science and exploration, commercial as well as International Space Station resupply.