Launch of OA-7 Cygnus scheduled for April 18.

The launch of the ULA Atlas V rocket carrying the OA-7 Cygnus spacecraft for Orbital ATK and NASA is scheduled for April 18.

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 has developed a plan to resolve the issue and is moving forward with launch vehicle processing.

The Atlas V and Cygnus spacecraft remain secure.