A Delta IVM+ 4,2 launch was reported as placing the GPS II F3 satellite into the correct orbit for the US Air Force on 4 October . However, it has later been announced that the launch vehicle’s second stage RL-10 engine had a lower than expected thrust which had to be compensated during the three burn sequence. An investigation is now taking place into the cause of the launch anomaly.
Delta IV launch put GPS II F3 satellite in correct orbit but only after compensating for low thrust
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