Atlas V anomaly caused by control valve – Satellite News Digest

ULA successfully delivered the OA-6 Cygnus spacecraft to the International Space Station (ISS) on 22 March. During the first stage burn, the Atlas V system experienced an anomalous propellant mixture ratio resulting in an early booster shutdown and degradation of first stage performance.

http://www.sat-nd.com/archive/?id=2016061502

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