The GOES-O launch aboard a Delta IV rocket from Space Launch Complex 37 has been moved and is currently scheduled for June 26th.
The launch window runs from 6:14 p.m. to 7:14 p.m. EDT. Recent production lot testing of the linear shape charge system has indicated the need to incorporate minor design changes to assure their reliability. The linear shape charge is a component of the Range Safety command destruct system. There are three linear shape charges on this Delta IV which will require a modification. Schedules are being developed for the qualification and implementation of the design modification.