Delta IV launch of new GPS satellite delayed — again

The launch of a United Launch Alliance Delta IV rocket carrying a new generation GPS satellite was scrubbed on Monday night just seconds before it was supposed to blastoff. It was the third time that the launch was cancelled in since Friday. Before the problem was with the telemetry signal from the satellite. This time the problem was with the rocket. “During the final seconds of the launch countdown, an anomalous data signature with the thrust vector control system on one of the two solid rocket motors mounted to the Delta IV booster was detected.,” the Air Force and ULA said in a joint statement. More

(Source: Orlando Sentinel - May 26)