Thursday, Dec. 20, 2018
(Vandenberg Air Force Base, Calif., Dec. 20, 2018) – The launch of a United Launch Alliance Delta IV Heavy carrying the NROL-71 mission for the National Reconnaissance Office was scrubbed yesterday due to indications of elevated hydrogen concentrations within the port booster engine section.
The team is currently reviewing all data and set the next launch attempt no earlier than Dec. 30, 2018.