Eighth GPS IIF Completes On-Orbit Checkout

The fourth GPS IIF satellite launched in 2014—the eighth overall—has completed on-orbit checkout, joining the active 31-satellite constellation, according to a Dec. 18 Boeing release. The vehicle launched Oct. 29 and completed on-orbit checkout Dec. 12. “We made great progress this year in the quest to modernize GPS services,” said Dan Hart, vice president of government space systems for Boeing Network & Space Systems. “With two-thirds of the 12 Boeing GPS IIFs now on orbit, the constellation is setting new records for accuracy and the Boeing GPS IIF’s are consistently among the best performing.”